Articles and methods are provided for miniature acoustic transducers having highly compliant suspension systems despite their small size. In various examples the suspension system is molded of a liquid silicone rubber (LSR) and is molded in an interior cavity geometry that includes at least one of a radial offset or an axial offset from a desired geometry of the suspension.

Articles and methods are provided for miniature acoustic transducers having highly compliant suspension systems despite their small size. In various examples the suspension system is molded of a liquid silicone rubber (LSR) and is molded in an interior cavity geometry that includes and apex radially offset and/or axially offset from a desired cured position of an apex of the suspension.

A loudspeaker diaphragm, comprising a dome portion located at central position and a suspension ring portion located at edge position; the dome portion and/or the suspension ring portion comprise silk fabric and thermoplastic polyurethane combined with the silk fabric; and the silk fabric is coated with thermosetting adhesive. The method for manufacturing the loudspeaker diaphragm comprises following steps: a. coating the silk fabric with a thermosetting adhesive under a high temperature, and drying the silk fabric; b. hot pressing and combining the silk fabric and thermoplastic polyurethane to form a membrane; c. pressing the membrane to form the dome portion and/or the suspension ring portion. The dome portion, or both the dome portion and the suspension ring portion of the loudspeaker diaphragm comprise silk fabric coated with a thermosetting adhesive and thermoplastic polyurethane. Thus formed loudspeaker diaphragm has good rigidity and damping characteristic, thus improving acoustic performance of the diaphragm.

A speaker includes a frame having an accommodation space; a magnetic circuit system accommodated in the accommodation space; and a vibration system accommodated in the accommodation space for generating sound. The vibration system includes a diaphragm and a voice coil. The diaphragm includes a first part fixed with the frame and a second part arranged between the first part and the frame. One end of the second part is connected with the first part. The accommodation space is divided by the second part into a first accommodation space for accommodating the magnetic circuit system and a second accommodation space for accommodating the voice coil.

A multi-layered laminate for producing membranes for electroacoustic transducers, comprises a first layer of a polyether ether ketone film having a heat of crystallisation of at least 15 J/g, a second layer (of a thermoplastic plastic film having a heat of crystallisation of no more than 5 J/g, and an adhesive layer arranged between the first and second layers. Alternatively, the first and second layers are defined by their shrinkage properties after 15 minutes at 200° C.: the first layer has shrinkage of more than 10% in at least one direction, and the second layer has shrinkage of less than 10% in the longitudinal and transverse directions. A laminate constructed in this manner exhibits lower fold formation when processed using multi-cavity thermoforming. The laminates are useful for the production of membranes for electroacoustic transducers.

The present invention includes a vibrating panel device for an electromagnetic vibrator, which includes at least one vibrating panel device. The vibrating panel module includes a base, a vibrating panel and an upper suspension, wherein an inner edge and an outer edge of the upper suspension are respectively connected with the base and the vibrating panel, and form an integrated whole body. Further, two vibrating panel modules are fixedly connected in opposite directions to form the vibrating panel device. By unique structures of the vibrating panel device, when the voice coil drives the vibrating panel to actuate, shaking of the vibrating panels is offset due to interactions between a pair of the suspensions and a pair of the vibrating panels, in such a manner that the voice coil drives the vibrating panel to process vertical up-and-down stroke, so as to replace a conventional damper.

The present document describes an apparatus for reducing fabric dimpling in electronic devices and associated methods. The apparatus is used during assembly to prevent fabric, which is stretched over a perforated part (e.g., speaker housing), from dimpling into the holes (e.g., perforations) of the perforated part. The apparatus includes protrusions (e.g., pins), which act as a negative of the holes in the perforated part, to support the fabric as it is stretched over the perforated part. In particular, the protrusions are inserted through the perforations via an interior surface of the perforated part such that the protrusions are “proud” (slightly projecting from a surface) with respect to an exterior surface of the perforated part. The proudness of the protrusions may vary based on a degree of curvature of the perforated part at a location corresponding to a respective protrusion.

A condenser microphone comprises a substrate, a vibratile diaphragm and a back plate. The substrate has an opening. The diaphragm is disposed corresponding to the substrate and covers the opening, and has a plurality of protrusions. The back plate is coupled to the diaphragm and has a plurality of through holes, at least some of which are corresponding to the protrusions respectively. An interval is formed between the diaphragm and the back plate, and when the diaphragm vibrates, the protrusions move into or further near the through holes.

The present invention discloses a vibration membrane assembly for a speaker, a method for producing a vibration membrane assembly and a speaker. The assembly comprises a vibration membrane and a vibration membrane carrier ring. The method comprises providing a first thermal molding die having a molding side, the molding side having a profile which is complementary to that of the second side of the vibration membrane assembly, putting the vibration membrane carrier ring onto the molding side of the first thermal molding die and laying a vibration membrane blank onto the vibration membrane carrier ring to bring the vibration membrane blank in contact with the vibration membrane carrier ring, applying a pressure to the vibration membrane blank against the vibration membrane carrier ring to nest and fix the vibration membrane blank on the vibration membrane carrier ring to form the vibration membrane assembly, removing the pressure off the vibration membrane blank and separating the vibration membrane assembly from the first thermal molding die.

A sound generator includes a frame, a magnetic circuit system and a vibration system accommodated in the frame. The vibration system includes a suspension. The suspension includes a first part and a second part attached to the first part. The first part includes a first middle portion, a first edge portion, and a first positioning portion. The second part includes a second middle portion, a second edge portion, and a second positioning portion. The second positioning portion is stacked on the first positioning portion, and is assembled with the first positioning portion by adhesive. The first edge portion is convex toward the frame, and the second edge portion is convex away from the frame, by which a sealed cavity is formed between the first and second edge portions. By virtue of such a configuration, the strength of the vibration system is improved.