21results about "Loudspeaker diaphragm materials" patented technology

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a diaphragm having a surface area configured to radiate acoustic energy; a suspension coupled to the diaphragm, wherein the suspension is non-planar in a resting position; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the support structure of approximately 6.0 millimeters (mm) or less, wherein the surface area of the diaphragm is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the support structure; and wherein the suspension between an inner side wall of the support structure and the diaphragm has a rounded shape in the resting position.

An electronic device, including a housing defining an opening, a speaker unit disposed within the housing and adjacent the opening, the speaker unit including an asymmetric diaphragm, and an asymmetric magnet assembly. The speaker unit can include a housing defining an internal volume, an asymmetric driver disposed in the housing; and a surround comprising a variable stiffness.

To provide an edge and the like that improve sound quality. The edge includes an edge-shaped portion that is formed from an inner peripheral portion to an outer peripheral portion, and a groove portion that is formed in the edge-shaped portion and has a peak portion and a valley portion, wherein a ridge line of the valley portion of the groove portion extends from a start point on the inner peripheral portion side to an end point on the outer peripheral portion side so as to draw a continuously changing curve.

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cone having a surface area configured to radiate acoustic energy; a suspension coupled to the cone; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the cone of approximately 6.0 millimeters (mm) or less, wherein the surface area of the cone is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the cone.

The invention relates to a balanced armature, BA, receiver, a hearing device comprising the BA receiver and a method for producing the BA receiver. The BA receiver comprises a magnet assembly, an electromagnetic coil, an armature and a diaphragm element. The magnet assembly generates a magnetic field in an air gap. The coil comprises a coil tunnel. The armature extends through the air gap and the coil tunnel. The diaphragm element comprises a membrane portion and a sealing rim that are formed as an integral part. The membrane portion is directly attached to the armature for moving the membrane portion with the armature. The sealing rim extends along the perimeter of the membrane portion and is arranged to seal a front volume of the receiver from a back volume of the receiver.

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.

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cone having a surface area configured to radiate acoustic energy; a suspension coupled to the cone; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the cone of approximately 6.0 millimeters (mm) or less, wherein the surface area of the cone is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the cone.

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.

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 loudspeaker includes: a diaphragm; a magnetic circuit; a frame that holds the magnetic circuit; an edge that is annular and connects the diaphragm and the frame; and a voice coil body that is disposed in a magnetic gap of the magnetic circuit. The diaphragm includes: a central portion; and an outer-circumferential portion that is provided as a single piece together with the central portion in an outer periphery of the central portion, and is bonded to the edge at a location in a vicinity of the central portion.

The present invention belongs to the technical field of speakers, and specifically relates to a planar transducer. The planar transducer of the present invention includes a frame, a magnetic circuit assembly, a diaphragm assembly, and a cover plate. An accommodation chamber is provided inside the frame. One end of the accommodation chamber has an opening. The magnetic circuit assembly is provided in the accommodation chamber. The magnetic circuit assembly includes a magnetic conductive plate and a magnet assembly attached to the magnetic conductive plate. The magnet assembly includes N first magnets and N - 1 second magnets, where N is 3 or more. The first magnets and the second magnets are sequentially and alternately attached and installed. The magnetic pole directions of the first magnets and the second magnets are perpendicular to each other. And in the magnet assembly, the magnetic pole directions of any two adjacent magnets of the same type, which are arranged at intervals from other types of magnets, are installed in opposite directions. The diaphragm assembly includes a base layer and a voice coil layer. The base layer is provided to cover the opening of the accommodation chamber. The voice coil layer is attached and connected to one side of the base layer. The other side of the base layer is installed facing the magnetic circuit assembly. The cover plate is provided to cover the opening of the accommodation chamber and is provided opposite to the voice coil layer.

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.

A piezoelectric transducer comprises a deflectable structure having a first portion and a laterally adjoining second portion. The first portion has a piezoelectric layer and the second portion has an insulating material layer, and the second portion has a higher rigidity and a smaller mass per unit area than the first portion.

An electronic device housing may include a display cover layer that overlaps an array of pixels. The cover layer or other portion of the housing may have an opening that forms an optical and audio port. Optical and audio components may be coupled to the port. A port cover may cover some or all of the port. The port cover may include one or more layers of mesh or other materials that allow light and sound to pass while blocking environmental contaminants. The optical components may include an ambient light sensor or other devices that receive light and / or may include devices that emit light. The audio components may include a microphone and / or a speaker. The optical component may emit or receive light that passes through the audio component. A structure in the interior of the housing may form a passageway coupled to the port through which sound and light passes.

The present invention relates to the technical field of speakers, and specifically relates to a planar transducer. The planar transducer of the present invention comprises a basket, a magnetic circuit assembly, a membrane assembly and a cover plate. An accommodation cavity is provided in the basket, and one end of the accommodation cavity is provided with an opening. The magnetic circuit assembly is disposed in the accommodation cavity, the magnetic circuit assembly comprising a magnetically conductive plate, and a magnet assembly attached to the magnetically conductive plate. The magnet assembly comprises a number N of first magnets and N-1 second magnets, N being greater than or equal to 3, the first magnets and the second magnets being arranged alternately attached to each other, magnetic pole directions of the first magnets being perpendicular to magnetic pole directions of the second magnets, and magnetic pole directions of any two magnets in the magnet assembly which are adjacent and arranged alternately with another type of magnet being arranged oppositely. The membrane assembly comprises a base layer and a voice coil layer, the base layer covering the opening of the accommodation cavity, the voice coil layer being attached to one side of the base layer, and the other side of the base layer being arranged facing the magnetic circuit assembly. The cover plate covers the opening of the accommodation cavity, and is disposed opposite the voice coil layer.

A planar transducer and a speaker are provided. The planar transducer includes a basket, a magnetic circuit assembly, a membrane assembly and a cover plate. An accommodation cavity is provided in the basket, and one end of the accommodation cavity is provided with an opening. The magnetic circuit assembly is disposed in the accommodation cavity. The magnetic circuit assembly includes a magnetically conductive plate, and a magnet assembly attached to the plate. The magnet assembly includes a number N of first magnets and N−1 second magnets, N being greater than or equal to 3, the first magnets and the second magnets being arranged alternately attached to each other, magnetic pole directions of the first magnets being perpendicular to magnetic pole directions of the second magnets, and magnetic pole directions of any two magnets in the magnet assembly, adjacent and arranged alternately with another type of magnet, being arranged oppositely.

The present invention relates to a receiver for use in an ear canal of a person, a receiver housing for such receiver and a receiver in canal assembly, wherein the receiver comprises a receiver housing having a sound outlet in acoustic communication with a first and a second front volume within the receiver housing; a first hinged diaphragm arranged within the receiver housing and separating a first front volume and a first rear volume within the receiver housing, wherein the first hinged diaphragm comprises a hinged portion and a moveable portion, and wherein a first voice coil is secured to the moveable portion of the first hinged diaphragm, to form a first diaphragm voice coil assembly, which moveable portion of the first hinged diaphragm is adapted to vibrate in response to a drive signal applied to the first voice coil; a second hinged diaphragm arranged within the receiver housing and separating a second front volume and a second rear volume within the receiver housing, wherein the second hinged diaphragm comprises a hinged portion and a moveable portion, and wherein a second voice coil is secured to the moveable portion of the second hinged diaphragm, to form a second diaphragm voice coil assembly, which moveable portion of the second hinged diaphragm is adapted to vibrate in response to a drive signal applied to the second voice coil; wherein the first and second rear volumes comprise a magnetic motor configured to generate a static magnetic field in a space within which at least part of the first and second voice coils are positioned.

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.

A passive horn integrally formed by using liquid silicone rubber, includes a first outer casing, a second outer casing, an inner casing and an iron piece. The first outer casing includes a sealing ring, a folding ring and a vibrating membrane, and the sealing ring, the folding ring and the vibrating membrane are integrally injection molded into the first outer casing. A groove is disposed in the second outer casing, and the first outer casing is disposed in the groove. The back surface of the vibrating membrane is provided with a casing groove, which is sequentially embedded with the inner casing and the iron piece. A preparation method of a passive horn integrally formed by using liquid silicone rubber, under the condition of integrated injection molding, may improve the yield rate, ensure product quality, save assembly time and labor cost, and improve production efficiency.

A loudspeaker assembly includes: a chassis; a loudspeaker, including a drive unit and a diaphragm. The diaphragm includes a body portion and inner and outer suspension portions, wherein the body portion extends between the inner and outer suspension portions. The drive unit moves the body portion along a movement axis. The body portion has a front face facing forwards and a rear face facing rearwards parallel to the movement axis. The outer suspension portion is integral with the body portion, and is attached to the chassis at a first attachment location such that the body portion is suspended from the chassis. The inner suspension portion is integral with the body portion, and is attached to the chassis at a second attachment location such that the body portion is suspended from the chassis. The first and second attachment locations have separate first and second positions along the axis, respectively.

A speaker includes: an edge having an outer circumference attached on an edge mounting portion of a resin frame by a resin ring provided on a front surface of the outer circumference. Interposed between the edge mounting portion and the resin ring is a projection-like energy director having a part abutting on one of the members and being melted from the part by ultrasonic waves.