25results about "Metallic diaphragms" patented technology

Example embodiments provide a voice coil speaker that may comprise a speaker frame and a diaphragm connected to the speaker frame and configured to be capable of axial movement. A heat conducting coil former may be connected to the diaphragm. A pole piece and a back plate may form an annular gap and conduct magnetic flux from an axially polarized permanent magnet in a complete loop that includes the annular gap. A voice coil may be wound on the heat conducting coil former and residing in the annular gap, the magnetic flux passing through the voice coil in the radial direction, such that the voice coil produces an axial force to cause the diaphragm to produce sound. A thermal bridge may be configured to conduct heat from the heat conducting coil former to the back plate.

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.

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.

A microphone array contains multiple microphone capsules whose outputs are electronically combined for directional recording of sound. The directivity and frequency characteristics of the microphone array depend on the number and position of the microphone capsules. In order to obtain the smallest possible microphone array with only a small number of microphone capsules, with nearly uniform directivity and frequency dependence over the audio frequency range, but which is scalable and robust to small mispositioning of the capsules. Microphone arrays with 15 or 21 microphone capsules (K 15,11 ~K 15,35 ,K 21,11 ~K 21,37 ) are arranged on a carrier (T, T') that are located on three similar branches, each branch being provided with the same number of microphone capsules, which are rotated by 120° with respect to each other. Each of the microphone capsules is located at a triangular corner of the L2 grid in a planar isometric coordinate system (forming an equilateral L2 grid) with three axes (L0, L1, L2) that are rotated by 120° with respect to each other.

Embodiments of the present disclosure provide a display apparatus and an electromagnetic actuator, the display apparatus includes a display structure, a sound-emitting substrate, at least one electromagnetic actuator and a stabilizer; where one side of the sound-emitting substrate is attached to the display structure, and the electromagnetic actuator is fixedly attached to the other side of the sound-emitting substrate through the stabilizer; the electromagnetic actuator includes a bracket and a plurality of flexible support feet extending away from the bracket. The electromagnetic actuator is fixedly arranged on the sound-emitting substrate through the stabilizer, and the bracket receives the electromagnetic actuator, the plurality of flexible support feet can keep the electromagnetic actuator stable during the vibration process of the electromagnetic actuator, which helps avoid position shift of the electromagnetic actuator under long-time working.

A loudspeaker device (200) is provided. The loudspeaker device (200) comprises a micro-electromechanical unit (100). The micro-electromechanical unit (100) comprises a diaphragm (10) having a planar extension. The diaphragm (10) comprises a semiconductor structure (20) comprising a first (22) and a second (24) layer, each layer extending in the planar extension. The first layer (22) comprises Al(1-x)Ga(x)N, wherein 0.2≤x≤0.4, and the second layer (24) comprises GaN. The diaphragm (10) is arranged to oscillate in an extension transverse to the planar extension to thereby generate sound waves. A calibrating weight (17) is arranged on a surface of the diaphragm (10). The micro-electromechanical unit (214) further comprises a support structure (30) supporting the diaphragm (10), an electrode arranged (50) on a surface of the diaphragm (10), and a resonant box.

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.

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.

Provided are an elastic material and a preparation method therefor and a loudspeaker and an electronic device. The elastic material comprises a carrying substrate, and a nanomaterial and a molecular sieve arranged inside pores of the carrying substrate; in the elastic material, the carrying substrate has a content of 97-99 wt %; a mass ratio of the nanomaterial to the molecular sieve is 1:0.9-1.1. The elastic material provided has a large specific surface area, which can effectively absorb noise, dissipate acoustic energy, and improve the efficacy of vibration and noise reduction; and by loading the nanomaterial and the molecular sieve, the shielding performance and signal output quality of the electronic device are improved, and the problem of reduced service life caused by unefficient heat dissipation of the electronic device is solved.

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.

An ultrasonic transducer includes a first diaphragm, one or more frame bodies, and one or more ultrasonic vibrators. The one or more frame bodies extend in a length direction and are bonded to the first diaphragm. The one or more ultrasonic vibrators are attached to the one or more frame bodies, respectively, and face the first diaphragm with a space therebetween. The first diaphragm is structured to resonate and vibrate in a direction orthogonal or substantially orthogonal to the first diaphragm in a phase opposite to a phase of the one or more ultrasonic vibrators. A dimension in the length direction inside the one or more frame bodies is equal to or greater than four times a dimension in a width direction orthogonal to the length direction inside the one or more frame bodies.

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.

A vibration assembly and a loudspeaker are provided. The vibration assembly includes a yoke structure, a diaphragm, a magnet member, and a voice coil. The yoke structure includes a plurality of first magnetic conductive layers and a plurality of first through holes. The diaphragm is arranged at a top end of the yoke structure. The magnet member is arranged at a bottom of a cavity formed by the diaphragm and the yoke structure, and an annular magnetic gap is between the magnet member and the yoke structure. The voice coil is arranged in the magnetic gap and connected to the diaphragm.

An electroacoustic transducer 1, particularly a flexural wave transducer, comprising at least one bend-resistant acoustic diaphragm 2 and a solid-state acoustic converter 3 for exciting this acoustic diaphragm 2 is described. In order to achieve an improved acoustic situation, it is proposed that this acoustic diaphragm 2 comprises a support material 4 coated with a synthetic resin, and that its acoustic output surface 5 is composed of at least two, particularly at least three, synthetic resin layers 6 which are joined to one another in a material-bonded form without joining means.

The present disclosure relates to a vibration device and a sound device and a vehicle device including the same. A vibration device can include a vibration means and an adhesive member located at a surface of the vibration means. A modulus of the vibration means can be equal to a modulus of the adhesive member, or can be greater than the modulus of the adhesive member.

A speaker includes a housing including a front housing provided in a conductive material; a driver including a diaphragm; a magnetic circuit including a permanent magnet; and an electric circuit including a voice coil to which current is applied based on an input electrical signal, and a first electric circuit configured to vibrate the driver based on the voice coil and a magnetic field formed by the magnetic circuit; wherein the diaphragm include a coating that is surface-coated with a conductive material so as to have a capacitance with the front housing.

A pressure wave generating element that includes a support and a fiber layer on the support and constructed to generate heat by energization. The fiber layer is in the form of a fiber membrane having an average pore diameter in a range of 0.1 to 1.0 μm, and the fiber layer includes one or more fibers having a surface at least partly provided with a metal coating.

Provided are a driver unit of a headphone, in which, in a case where a driver unit including a piezoelectric film having a formed curved portion is applied to the headphone, deformation of the curved portion of the piezoelectric film in a case of wearing the headphone can be suppressed, and deterioration in sound quality can be suppressed; and a headphone. The driver unit includes a piezoelectric film which has a piezoelectric layer consisting of a polymer-based piezoelectric composite material containing piezoelectric particles in a matrix containing a polymer material and electrode layers provided on both surfaces of the piezoelectric layer, and a perforated plate having at least one through-hole, in which the piezoelectric film has a curved portion which is formed to protrude to one main surface side and to be recessed to the other main surface side, the perforated plate is laminated on a concave surface side of the curved portion of the piezoelectric film, and in the through-hole, a first air chamber defined by the concave surface of the piezoelectric film and the perforated plate communicates with an outside.

A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be significantly greater than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).

Provided are: a driver unit which is provided with a piezoelectric film having a curved section that has been molded, and which, when the driver unit is applied to a headphone, can suppress deformation of the curved section of the piezoelectric film when the headphone is worn, and can suppress a decrease in sound quality; an actuator unit is provided with: a piezoelectric thin film having a piezoelectric body layer comprising a polymer composite piezoelectric body in which piezoelectric body particles are contained in a matrix comprising a polymer material, and electrode layers provided on both surfaces of the piezoelectric body layer; and a perforated plate having at least one through hole, the piezoelectric film has a curved portion formed so as to protrude toward one of the main surfaces and to be recessed toward the other main surface, the perforated plate is laminated on the concave surface side of the curved portion of the piezoelectric film, and the through hole communicates a first air chamber defined by the concave surface of the piezoelectric film and the perforated plate with the outside.

Disclosed is a multi-cone loudspeaker, including a cone assembly. The cone assembly includes a central cone and a plurality of outer cones successively arranged in a circumferential direction of the central cone. The central cone is driven by a central driving mechanism to vibrate and sound, each of the plurality of outer cones is driven by one of outer driving mechanism to vibrate and sound. The central driving mechanism includes a central voice coil connected to the central cone, and a central magnetic driving system for driving the central voice coil, and each of the plurality of outer driving mechanism includes an outer voice coil connected to one of the plurality of outer cones, an outer damper sleeved on the outer voice coil, and an outer magnetic driving system for driving the outer voice coil.

This application provides a sound generation apparatus and an electronic device. The sound generation apparatus includes a first transducer and a second transducer. The first transducer includes a first base and a first vibration component. A peripheral edge of the first vibration component is fastened to the first base. The second transducer includes a second base and a second vibration component. The second vibration component is fastened to the second base. The second vibration component and the first vibration component are disposed opposite to and spaced apart from each other. A middle part of the first vibration component and the second transducer enclose a vibration space. The second vibration component and the peripheral edge of the first vibration component enclose an acoustic channel. The vibration space communicates with an external space through the acoustic channel.

A pressure wave generating element that includes a support; a fiber layer on the support, the fiber layer containing a fiber having a surface thereof at least partially coated with a metal coating, and the fiber in the fiber layer being oriented in a predetermined direction; and a pair of electrodes arranged so as to apply a voltage in an orientation direction of the fiber of the fiber layer.

To improve a sound characteristic and a sound pressure characteristic in a low-pitched sound band region.SOLUTION: A vibration apparatus may include a vibration element and an adhesive member at a rear surface of the vibration element. A modulus of the vibration element may be equal to a modulus of the adhesive member or may be greater than the modulus of the adhesive member.SELECTED DRAWING: Figure 1

This application provides a sound generation apparatus and an electronic device. The sound generation apparatus includes a first transducer and a second transducer. The first transducer includes a first base and a first vibration component. A peripheral edge of the first vibration component is fastened to the first base. The second transducer includes a second base and a second vibration component. The second vibration component is fastened to the second base. The second vibration component and the first vibration component are disposed opposite to and spaced apart from each other. A middle part of the first vibration component and the second transducer enclose vibration space. The second vibration component and the peripheral edge of the first vibration component enclose an acoustic channel. The vibration space communicates with external space through the acoustic channel. The sound generation apparatus has a simple structure and a small size.