65results about "Polymeric diaphragms" patented technology

There is a composite material for an acoustic transducer diaphragm comprising: a thermoplastic polymer resin, a graphitic filler, and optionally a coupling agent. The thermoplastic polymer resin is selected from the group consisting of polypropylene, polyethylene, poly(methyl methacrylate), polycarbonate, polyoxymethylene, cyclic olefin copolymer, polyethylene terephthalate, acrylonitrile butadiene styrene, polybutylene terephthalate, polyamide, poly(ADP-ribose) polymerase, polyethylenimine, polyamide-imide, polyether ether ketone, polyolefin, polyester, polycarbonate, polysulfone, polyacetals, polyvinyl acetals, polyketone, polyamides, cyclic olefin copolymer, thermoplastic thermotropic liquid-crystal polymer, polyphenylene sulfide, polyimide and a mixture thereof. The graphitic filler is selected from the group consisting of graphene oxide, reduced graphene oxide, graphite, graphene and carbon nanotubes, and a mixture thereof. The coupling agent or a mixture is selected from the group consisting of titanium organometallics, aluminum organometallics, zirconium organometallics, and silicon organometallics.

Provided in the present application are an reinforced dome and a loudspeaker. Preparation raw materials for the reinforced dome comprise a main material and an reinforced material added to the main material, the particle size of the reinforced material being 1 nm-5 μm, and the mass percentage of the reinforced material added to the preparation raw materials being 1-50%. The reinforced dome of the present application comprises the main material and the reinforced material added to the main material. The reinforced material is added to the main material so as to enhance the mechanical properties of the dome, such that compared with those of domes in the prior art made of pure polymer materials or metal materials, the elastic modulus of the reinforced dome obtained in the present application is increased while the quality requirements of the dome is ensured, thus improving the high-frequency performance of loudspeaker products.

A textile enabling control related to sound output is to be provided. A textile according to the present application is characterized by being formed to include foil of an organic piezoelectric film.

The present disclosure provides a conductive diaphragm and a speaker using same. The conductive diaphragm includes a main portion made of polymer material and a conductive portion located on the main portion. The conductive portion includes a substrate with a film layer and conductive material dispersed in the substrate, the film layer is solidified from at least one material of thermoplastic elastomer, phenyl silicone, isoprene rubber, or fluoroelastomer. Compared with the related technologies, the conductive diaphragm disclosed by the present disclosure has excellent atigue-resistant property and could maintain good adhesive strength and toughness.

[Problem] To provide a higher performance and higher quality curved diaphragm speaker system that has sufficient performance for hard-of-hearing people and also for hearing people. [Solution] A speaker unit 10 according to the present invention at least includes: a first diaphragm 1 in a cone shape; a blade piece 5 in a plate shape to which a second diaphragm in a sheet shape forming a rounded surface portion that is curved from one end side to the other end side; and a driver unit 3 that drives those cone shaped diaphragm and blade piece together. The blade piece is connected via a center cap attached to a tip end of a voice coil of the driver unit so as to protrude from a small diameter 1a side to a large diameter 1b side of the first diaphragm. In the first diaphragm, the small diameter side is connected to the driver unit, and also the large diameter side is attached to a cone support frame 9. Additionally, the second diaphragm is arranged such that the one end side is overlapped with one surface of the blade piece.

Provided is a speaker diaphragm that can uniformly increase rigidity throughout the entire area. A speaker diaphragm 1 of the present invention includes a base material having a resin matrix 2 with a thermoplastic resin as a main component and fibers 3 dispersed in the resin matrix 2, the fibers 3 being poly-p-phenylene benzobisoxazole fibers, the average length of the fibers 3 being 0.5 mm or more and 3.0 mm or less, and the content of the fibers in the base material being 3 mass% or more and 15 mass% or less.

The present invention belongs to the technical field of electroacoustics, and specifically relates to a diaphragm of a sound-producing device, and a sound-producing device. The diaphragm of the sound-producing device of the present invention comprises at least one phenyl silicone rubber layer, which contains a network polymer. The phenyl silicone rubber layer is formed by curing a liquid phenyl silicone rubber compound, which comprises methylphenyl vinyl polysiloxane, a methylphenyl vinyl silicone resin and a hydrogen-containing phenyl silicone oil. In the present invention, the diaphragm having the phenyl silicone rubber layer can significantly improve the adhesive force of the diaphragm to a housing and to a voice coil. Moreover, the hydrogen-containing phenyl silicone oil and methylphenyl vinyl polysiloxane have good compatibility, which makes the curing uniformity of the phenyl silicone rubber layer better, and the mechanical properties thereof more balanced and less prone to failing. In addition, the diaphragm of the present invention has high damping performance and can also significantly reduce THD distortion of the diaphragm, thus resulting in better acoustic performance.

The present invention relates to an acoustic membrane (14a) for an acoustic transducer, the membrane comprising a substrate (21); and at least one reinforcement layer (23a-23b) of the substrate (21), the at least one reinforcement layer (23a-23b) enabling to improve the stiffness of the membrane (14a). The reinforcement layer (23a-23b) of the substrate (21) corresponds to an amorphous carbon layer belonging to the DLC family and has a stiffness greater than 300 GPa, a density lower than 3400 kg / m 3 and a thickness between 0.5 pm and 6 pm. The reinforcement layer (23a-23b) is attached to the substrate (21) with a bonding layer (22a-22b) having a thickness between 0.1 pm and 1 pm and comprising at least one metallic compound.

Described herein are thermoplastic core-sheath fibers. The thermoplastic core-sheath fibers include a core having a coextensive sheath layer disposed thereon, the core including a first polymeric resin and a charge-enhancing additive, and the sheath layer including a second polymeric resin, with the proviso that when the second polymeric resin includes poly(4-methyl-1-pentene), the second polymeric resin does not include 100% by weight of poly(4-methyl-1-pentene). These thermoplastic core-sheath fibers can be used in filtration applications.

Membrane (1) for use in an audio transducer, wherein the membrane (1) has a first outer surface, a second outer surface opposite the first outer surface, and a support structure, wherein a skin (8) defines the first outer surface of the membrane (1), wherein the support structure is arranged on or in the skin (8), and wherein the support structure has a honeycomb pattern structure (110) which has an arrangement of substantially regular cells (110b) with a defined geometry, wherein the skin (8) is a first skin (108), wherein the membrane (1) further comprises a second skin (112), wherein the honeycomb pattern structure (110) is arranged between the first and second skin (108, 112) and wherein the second skin (112) defines the second outer surface of the membrane (1), wherein the honeycomb pattern structure (110) is integrally formed with the first skin (108), and wherein the second skin (112) is connected to the honeycomb pattern structure (110) but is not integrally formed with it to form the membrane (1), or wherein the honeycomb pattern structure (110) is integrally formed with the second skin (112) and wherein the first skin (108) is connected to the honeycomb pattern structure (110) but is not integrally formed with it to form the membrane (1).

The present application belongs to the field of electroacoustic technology, and particularly relates to a diaphragm of a sound emitting device and the sound emitting device. The diaphragm of the sound emitting device comprises at least one phenyl silicone rubber layer, the phenyl silicone rubber layer contains a network polymer, the phenyl silicone rubber layer is formed by curing a liquid phenyl silicone rubber compound, and the liquid phenyl silicone rubber compound comprises methylphenylvinyl polysiloxane, methylphenylvinyl silicone resin and phenyl hydrogen-containing silicone oil. The diaphragm with the phenyl silicone rubber layer can significantly improve the adhesion of the diaphragm, the shell and the voice coil. Meanwhile, the phenyl hydrogen-containing silicone oil and the methylphenylvinyl polysiloxane have good compatibility, so that the curing uniformity of the phenyl silicone rubber layer is better, the mechanical properties are more balanced and the failure is less likely to occur. In addition, the diaphragm has high damping performance, can significantly reduce the THD distortion of the diaphragm, and has better acoustic performance.

Membrane material for loudspeaker drivers and material for dust caps of loudspeaker drivers, characterized in that it consists of pure or at least very pure β-polypropylene. The material preferably consists of isotactic polypropylene homopolymer. The crystallinity of the material is preferably between 40% and 65%. The crystals (β-polypropylene crystals) preferably have a size of 10 µm to 20 µm. For a crystal size of 15 µm, the side length is approximately 7.5 µm and the two large faces each have a size of approximately 146 µm. 2 The crystal's height is approximately 2.6 µm and its volume is approximately 380 µm³. 3 . The spherulites (clusters of crystals) of the material preferably have a size of 300 µm to 1200 µm.

The invention discloses a micro loudspeaker structure and a forming method thereof. The micro loudspeaker structure comprises a substrate, a vibrating diaphragm, a coil, a bearing plate and a permanent magnetic element. The substrate is provided with a hollow cavity. The vibrating diaphragm is arranged on the substrate and covers the hollow cavity. The diaphragm includes an etched pattern recessed from a first surface of the diaphragm. The etched pattern is used to increase a sound pressure level within a specific frequency range. The coil is embedded in the vibrating diaphragm. The bearing plate is arranged on the bottom surface of the substrate. The permanent magnetic element is arranged on the bearing plate and located in the hollow cavity. The first surface of the diaphragm faces the permanent magnetic element.

A micro speaker structure is provided, including a substrate, a diaphragm, a coil, a carrier board, and a permanent magnetic element. The substrate has a hollow chamber. The diaphragm is disposed over the substrate and covers the hollow chamber. The diaphragm includes an etching pattern recessed form a first surface of the diaphragm. Etching patterns are used to increase sound pressure level at special frequency range. The coil is embedded in the diaphragm. The carrier board is disposed on the bottom surface of the substrate. The permanent magnetic element is disposed on the carrier board and in the hollow chamber. The first surface of the diaphragm faces the permanent magnetic element.

Disclosed is a speaker which improves acoustic performances and includes a frame, a vibration system, a magnetic circuit system, a front cover, a sealing diaphragm, and a sound outlet. The vibration system includes an upper diaphragm, a lower diaphragm in an annular shape, a skeleton including an annular enclosure wall, and a voice coil. The magnetic circuit system includes a bottom plate, a first magnetic unit, and a second magnetic unit. The upper diaphragm includes an inner suspension fixed to the first magnetic unit, an outer suspension fixed to the frame, and a dome. The upper diaphragm and the front cover form a first front cavity. The annular enclosure wall, the sealing diaphragm, the lower diaphragm and the frame form a second front cavity. Both the first front cavity and the second front cavity communicate with the sound outlet.

A speaker and a method are disclosed, where the speaker comprises a rotary actuator comprising a wound laminate. The laminate comprises a first layer and a second layer each comprising or consisting of a dielectric elastomer, a first electrode disposed between the first layer and the second layer in direct contact therewith. The laminate also comprises a second metal layer disposed between and electrically conductively connected to a first sub-layer of the first electrode and a second sub-layer of the first electrode. The laminate also comprises a second electrode disposed on a side of the first layer distal from the first electrode and in direct contact with the first layer; a third electrode disposed on a side of the second layer distal from the first electrode and in direct contact with the second layer. The laminate also comprises a first metal layer electrically conductively connected to the third electrode.

A semiconductor structure includes a substrate having a cavity thereon; a membrane suspended above the cavity and anchored to the substrate, wherein the membrane comprises a central region, a peripheral suspension region, and a coil region between the central region and the peripheral suspension region; and a coil embedded in the coil region of the membrane, wherein the peripheral suspension region has a first concave portion and a first convex portion.

The present invention provides a diaphragm for a speaker, and a speaker. The diaphragm comprises a main body portion and a conductive portion disposed at the main body portion. The conductive portion comprises a matrix and conductive materials dispersed in the matrix, and the mass percentage of the conductive materials in the conductive portion ranges from 35 wt% to 95 wt%. The conductive materials have at least one of the following shapes: spherical, flake-like, thin rod-like, and network-like. Conductive materials of a same shape have at least one size. A spherical conductive material has a particle size ranging from 0.01 μm to 20 μm; a flake-like conductive material has a thickness ranging from 0.05 μm to 5 μm and a length ranging from 0.01 μm to 20 μm; and a thin rod-like conductive material has a diameter ranging from 5 nm to 100 nm and a length ranging from 0.1 μm to 50 μm. The diaphragm for a speaker provided by the present invention has excellent electrical conductivity.

The present invention provides a loudspeaker assembly for use on the outside of a vehicle. The diaphragm and surround are formed of a single piece of material, the material comprising a single layer woven fabric of orthogonal, woven fibers and a thermoset resin.

Audio system comprising at least one structure-borne sound transducer and an artificial leather serving as a membrane, wherein the artificial leather comprises at least one breathable layer of a polyvinyl chloride polyurethane composite material.

Provided in the present invention is a conductive diaphragm, which comprises a main body part and a conductive part arranged in the main body part, wherein the conductive part comprises a matrix and a conductive material, which is dispersed in the matrix. The matrix comprises a film layer, wherein the film layer is formed by curing at least one of a thermoplastic elastomer, phenyl silicone rubber, isoprene rubber and fluororubber. The conductive diaphragm provided in the present invention has good mechanical properties and fatigue resistance, and can still maintain relatively good bonding strength and toughness in the case where the filling amount of the conductive material is high.

The present application provides a rubber diaphragm and a sound-producing device. The diaphragm is prepared from a polymer matrix and auxiliary agents by means of a vulcanization and cross-linking reaction. The auxiliary agents comprise a filler, a vulcanizing agent, an accelerator, a plasticizer, and an activator. In parts by weight, the addition amounts of the polymer matrix and the auxiliary agents are respectively as follows: 100 parts of the polymer matrix, 40-120 parts of the filler, 1-4 parts of the vulcanizing agent, 2-5 parts of the accelerator, 5-20 parts of the plasticizer, and 0.5-1.5 parts of the activator. The rubber diaphragm of the present application is prepared from the polymer matrix and the auxiliary agents by means of a vulcanization and cross-linking reaction. By coordinating the choices of polymer matrix types and auxiliary agents with the addition amounts of the raw materials, the diaphragm is prepared. The glass transition temperature Tg (DMA, 1 Hz, 3 K / min) of the resulting diaphragm is between -20ºC and -40ºC, a ratio of the modulus thereof at a low temperature of -20ºC to that at a normal temperature of 25ºC is less than 4.5, and various performance indicators are stable in a low-temperature environment, ensuring that a sound-producing device made of the diaphragm has stable performance in a low-temperature environment.

The herein described innovative concept concerns a sound transducer device (100) comprising a multilayer component board (110) having a first side (101) and an opposite second side (102), and a sound port (120) extending between the first and second sides (101, 102) of the multilayer component board (110). It further comprises a MEMS sound transducer die (130) comprising a suspended membrane structure (140), wherein the MEMS sound transducer die (130) is arranged at the first side (101) of the multilayer component board (110) such that the suspended membrane structure (140) is in fluid communication with the sound port (120). It further comprises a mesh structure (150) for providing an environmental barrier, the mesh structure (150) covering the sound port (120) from either one of the first and second sides (101, 102) of the multilayer component board (110).

The present application relates to a kind of flexible audio sensor and the manufacturing method of flexible audio sensor.Flexible audio sensor includes support, first component and second component.Support has opening, first component includes the organic film attached on the support and the first electrode attached on the surface of the organic film towards the support, at least in the region corresponding to the opening, first component is formed with hollow hole array, second component includes the ultra-thin paper film attached on the surface of the organic film away from the support and the second electrode attached on the surface of the ultra-thin paper film towards the organic film, at least in the region corresponding to the opening, second component is formed with micropore array.The technical scheme of the present application, by the dual effect of triboelectricity and electrostatic induction, without additional power supply, simple structure and easy to make, can effectively realize the detection or collection of audio signal under the excitation of external sound, and application scenario is wide.

The invention discloses a semiconductor structure and a manufacturing method thereof, and the semiconductor structure comprises a substrate which is provided with a cavity; the diaphragm is suspended above the cavity and anchored to the substrate, and the diaphragm comprises a central area, a peripheral dangling edge area and a coil area located between the central area and the peripheral dangling edge area; the coil is embedded in the coil area of the diaphragm, and the peripheral dangling edge area is provided with a first concave part and a first convex part.

A loudspeaker transducer diaphragm or cone (e.g., 201, 301 or 401) is configured with arcuate protrusions that project distally from the main forward or distal surface 230 to provide stiffening and a break-up of resonant vibration modes when the loudspeaker is in use. The protrusions (e.g., 210, 310 or 410) are convex on one surface 230 and concave on the opposite surface 234, so their average thickness is similar to the frustoconical areas of the cone, i.e. they are shell-like in nature rather than solid mounds or walls. The protrusions 210 are generally curved as they run radially from the inner opening 204 to the outer peripheral edge to encourage modal break-up (suppressing strong vibrational modes, e.g., as in region 155).

The present application discloses a diaphragm for a speaker, includes a main body and a conductive part disposed on the main body. The conductive part includes a base portion and a conductive material dispersed in the base portion. The conductive material accounts for 35 wt % to 95 wt % of the conductive part, and the shape of the conductive material includes at least one of spherical, flake, rod-like, and network-like, wherein the conductive material of the same shape includes at least one size. By adding conductive materials of different morphologies and controlling the sizes of the conductive materials of different shapes in the base portion, the conductivity of the conductive part can be more efficiently improved, reducing costs while making the conductivity of the conductive part more excellent, meeting the conductivity requirements of the diaphragm.

The herein described innovative concept concerns a sound transducer device (100) comprising a multilayer component board (110) having a first side (101) and an opposite second side (102), and a sound port (120) extending between the first and second sides (101, 102) of the multilayer component board (110). It further comprises a MEMS sound transducer die (130) comprising a suspended membrane structure (140), wherein the MEMS sound transducer die (130) is arranged at the first side (101) of the multilayer component board (110) such that the suspended membrane structure (140) is in fluid communication with the sound port (120). It further comprises a mesh structure (150) for providing an environmental barrier, the mesh structure (150) covering the sound port (120) from either one of the first and second sides (101, 102) of the multilayer component board (110).