84results about "Diaphragm extensions" patented technology

The invention belongs to the technical field of electroacoustics, and particularly relates to a vibrating plate for a sound production device, a vibrating diaphragm assembly and the sound production device, and main body part preparation raw materials of the vibrating plate for the sound production device comprise an aluminum alloy material and a heat dissipation enhancing filler mixed in the aluminum alloy material, the volume fraction of the heat dissipation enhancing filler in the preparation raw materials of the main body part is 5%-50%, the color difference L value of the outer surface of the vibration plate is 30-80, and the emissivity of the vibration plate at the temperature of 100 DEG C is 0.5-0.98. According to the vibration plate for the sound production device, the preparation raw materials comprise the aluminum alloy material and the heat dissipation reinforcing filler mixed in the aluminum alloy material, and at least the problems that an existing vibration plate is low in elasticity modulus and poor in heat dissipation effect can be solved.

An audio transducer includes a diaphragm assembly. The diaphragm assembly can include a diaphragm, an attachment portion that circumferentially surrounds the diaphragm, and a flexible surround extending between the diaphragm and the attachment portion. The audio transducer can include a voice coil coupled to the diaphragm where the voice coil has a voice coil lead. The audio transducer can include a carrier that circumferentially surrounds the voice coil. The carrier can include an annular mounting surface, with the attachment portion of the diaphragm assembly being able to attach to the mounting surface, and a channel formed in the mounting surface. The voice coil lead can extend through the channel.

The application provides a vibrating diaphragm and a loudspeaker. The loudspeaker comprises a vibrating diaphragm. The vibrating diaphragm comprises a crystal and a film body. The crystal can form a magnetic field after being electrified. The film body is formed by solidification of a liquid injection material. One side surface of the film body has a protruding part. The protruding part is provided with a receiving groove. The crystal is located in the receiving groove. The top of the protruding part has a shielding part. The shielding part is partially located above the receiving groove and is used for limiting the crystal and exposing part of the crystal. The crystal and the film body are connected in an integrated injection molding manner. The crystal can form a variable magnetic field through current change and interact with an environmental magnetic field to drive the film body to vibrate and emit sound. The vibrating diaphragm and the loudspeaker can realize the purposes of simplifying the process, ensuring the connection between the crystal and the film body, improving the production efficiency and reducing the processing cost by connecting the crystal and the film body in an integrated injection molding manner. The structural stability is further improved through the structural design of the protruding part and the shielding part in the film body, so that the purpose of ensuring the sound quality is realized.

A speaker includes a frame, a magnetic circuit system, and a diaphragm structure. The magnetic circuit system is arranged in the frame. A central part of the diaphragm structure is located on a voice coil of the magnetic circuit system. A connecting part of the diaphragm structure surrounds an outer edge of the central part. A first end of the connecting part faces the voice coil, and a second end of the connecting part is provided with a protruding structure. A hanging edge of the diaphragm structure includes a first bending section and a second bending section connected to each other, and the second bending section is connected to the protruding structure. In a normal direction of a bottom surface of the frame, the protruding structure is higher than a connection between the first bending section and the second bending section.

The invention discloses a vibrating diaphragm for a sound production device, the sound production device and electronic equipment. The vibrating diaphragm comprises a styrene-butadiene rubber layer, the styrene-butadiene rubber layer is prepared from a blending material, the blending material comprises a first styrene-butadiene copolymer and a second styrene-butadiene copolymer, the mass percentage of styrene in the first styrene-butadiene copolymer is 8%-12%, the mass percentage of styrene in the second styrene-butadiene copolymer is 40%-50%, and the mass percentage of styrene in the second styrene-butadiene copolymer is 10%-20%. The mass percentage of the first butylbenzene copolymer in the blended material is 50%-80%; the glass transition temperature of the styrene butadiene rubber layer is-40 DEG C to 0 DEG C. The blending material comprises the first styrene-butadiene copolymer with low glass transition temperature and the second styrene-butadiene copolymer with high glass transition temperature, so that the damping temperature range of the styrene-butadiene rubber layer can be effectively widened, and the vibrating diaphragm has a high loss factor in the temperature range of-60 DEG C to 20 DEG C.

A system including: a first damper attached to a support frame; a drive component penetrates the support frame and the first damper; a diaphragm holder having a first frame part, a framework unit, and a fixing part connected to the first frame part by the framework unit; the diaphragm holder connected to the first damper; the fixing part is connected to one end of the drive component; a diaphragm assembly having a diaphragm unit and an annular diaphragm; a phase ball assembly attached to the side of the annular diaphragm closer to the diaphragm holder; a second damper sleeved on the outside of the diaphragm holder, the diaphragm assembly. the phase ball assembly, and the first damper: the side in the second damper facing the diaphragm holder is connected to the diaphragm holder and the side in the second damper facing the support frame is connected to the support frame.

A through hole is formed in an inner-side yoke making up a magnetic circuit portion, passing therethrough following a vibration direction of a vibration unit, and circuit boards are disposed in the through hole. The circuit boards are disposed with board surfaces thereof following the vibration direction of the vibration unit. Also, an opening area of a middle space across which the circuit boards oppose each other is larger than opening areas of side spaces. Accordingly, flow quantity of air through the through hole can be obtained, increase in air resistance at the time of vibration of the vibration unit can be suppressed, and also wind velocity can be obtained, whereby cooling effects of heat-generating components mounted on the circuit boards can be improved.

The invention discloses a vibrating diaphragm for a sound production device, the sound production device and electronic equipment. The vibrating diaphragm comprises a modified polyisoprene rubber layer, the modified polyisoprene rubber layer is prepared from a blending material, and the blending material comprises polyisoprene rubber and a damping modifier; the mass percentage of the polyisoprene rubber in the blended material is greater than or equal to 45%; the damping modifier comprises at least one of a butadiene-acrylonitrile copolymer, a hydrogenated butadiene-acrylonitrile copolymer, an ethylene-vinyl acetate copolymer and an acrylate homopolymer, the modified polyisoprene rubber layer has a first glass transition temperature and a second glass transition temperature, the first glass transition temperature ranges from-70 DEG C to-50 DEG C, and the second glass transition temperature ranges from-70 DEG C to-50 DEG C; the second glass transition temperature is from-40 DEG C to-5 DEG C. The vibrating diaphragm provided by the embodiment of the invention has two glass transition temperature regions within the temperature range of-70 DEG C to 10 DEG C, so that the vibrating diaphragm has good damping performance, the THD of the sound production device is effectively reduced, and the listening yield is improved.

The invention discloses a loudspeaker, and the loudspeaker comprises a frame; a vibrating membrane; a support element for the diaphragm; comprising a magnet yoke, a magnetic core and a magnetic circuit of a magnet, and an air gap is formed between the magnet yoke and the magnetic core; and a coil having an upper portion connected to the diaphragm and a lower portion inserted into the air gap. The diaphragm includes: an inner annular portion including an arcuate first central section, a first inner edge connected to a support element, and a first outer edge; an outer annular portion including an arcuate second central section, a second inner edge, and a second outer edge connected to the frame; an intermediate annular portion comprising a dome-shaped section arranged with its concave surface facing downward and connected to the second inner edge, and a funnel-shaped second section extending convergently from the dome-shaped section towards the support element and connected to the first outer edge.

The utility model belongs to the technical field of loudspeakers, and discloses a loudspeaker unit and an array loudspeaker. The loudspeaker unit comprises a closed-loop-shaped shell wall, a plane voice diaphragm, a first sound pressure guide plate and a second sound pressure guide plate. The cross section, perpendicular to the first direction, of the closed-loop-shaped shell wall is in a hollow closed-loop shape, the plane voice diaphragm is located in the closed-loop-shaped shell wall, the thickness direction of the plane voice diaphragm is the third direction, the first direction is perpendicular to the third direction, and at least part of the edge of the plane voice diaphragm is arranged on the closed-loop-shaped shell wall. An inner cavity of the closed-loop-shaped shell wall is divided into a first sound cavity and a second sound cavity which are independent from each other by the plane sound film. The first sound pressure guide plate and the second sound pressure guide plate are both perpendicular to the first direction, the first sound pressure guide plate seals a port of one end of the first sound cavity in the first direction, and the second sound pressure guide plate seals a port of the other end of the second sound cavity in the first direction.

An apparatus is described which comprises a substrate having a through opening and a membrane over the through opening. In at least one example, the apparatus comprises a first beam coupled between a first side of the membrane and the substrate, the first beam including a first stress sensor. In at least one example, the apparatus further comprises a second beam coupled between a second side of the membrane and the substrate, the second side opposing the first side, and the second beam including a second stress sensor.

The present invention relates to a MEMS die and a MEMS-based sensor. A micro-electromechanical system (MEMS) die comprises: a piston; an electrode facing the piston, wherein the capacitance between the piston and the electrode changes as the distance between the piston and the electrode changes; and an elastic structure (e.g., a gasket or a corrugated wall) disposed between the piston and the electrode, wherein the elastic structure supports the piston and resists movement of the piston relative to the electrode. A back cavity volume is defined by the piston and the elastic structure, and the elastic structure prevents air from leaving the back cavity volume. The piston may be a rigid body made of a conductive material such as a metal or a doped semiconductor. The MEMS die may further comprise a second elastic structure that provides further support for the piston and is disposed within the back cavity volume.

The embodiments of the present disclosure disclose a glass fiber speaker diaphragm for car audio. A specific implementation of the glass fiber speaker diaphragm includes a base layer, a reinforcement layer, and a top layer; the base layer and the top layer include rubber; the reinforcement layer includes glass fiber cloth; the reinforcement layer is located between the base layer and the top layer; the base layer, the reinforcement layer, and the top layer are configured to be integrally formed by die casting; the glass fiber speaker diaphragm is provided with a vibration area and a fixed area; the fixed area surrounds the vibration area; an isolation groove is provided between the vibration area and the fixed area; a groove group is provided on the surface of the vibration area, the groove group includes at least one groove, and each groove in the groove group is arranged in a predetermined manner on the surface of the vibration area; a reinforcing rib is provided on the edge of the vibration area, the reinforcing rib is located in the border area between the vibration area and the isolation groove, the reinforcing rib connects the vibration area and the isolation groove; the reinforcing rib surrounds the groove group. This implementation enhances the strength of the speaker diaphragm by adding glass fiber cloth to the speaker diaphragm, thereby extending its service life.

The invention belongs to the technical field of sound energy conversion, and discloses a vibrating diaphragm, a loudspeaker and electronic equipment. The vibrating diaphragm comprises a folding ring part and a sealing body, and the sealing body is arranged around the folding ring part; the sealing body comprises an abutting portion and a first connecting portion which are connected, the included angle between the inner side face of the abutting portion and a dummy line parallel to the second direction is a first included angle a, the included angle between the outer side face of the abutting portion and the dummy line parallel to the second direction is a second included angle b, and the first included angle a is smaller than the second included angle b; the first connecting part is connected to the folding ring part, and the second direction is perpendicular to the axis direction of the sealing body. The vibrating diaphragm, the loudspeaker and the electronic equipment provided by the invention have better acoustic performance and higher waterproof performance.

Embodiments of the present invention relate to the technical field of semiconductor devices and disclose a MEMS microphone and a method for preparing the same. In the disclosure, the substrate is provided with at least one chamfer at an inner edge of a side of the substrate close to the diaphragm, so that when the diaphragm is bent towards the substrate due to vibration, providing the chamfer can prevent the diaphragm from hitting the substrate, or increase the contact area between the diaphragm and the substrate when the diaphragm hits the substrate, avoiding the concentration of stress and thus reducing the risk of the diaphragm breaking. In this way, the probability of failure of the MEMS microphone due to breakage of the diaphragm can be reduced, and the robustness of the MEMS microphone can be enhanced.

A speaker includes a vibration system and a magnetic circuit system driving the vibration system to vibrate and sound. The vibration system includes a voice membrane and a voice coil driving the voice membrane to vibrate. The voice membrane includes a diaphragm and a dome fixed with the diaphragm, the dome includes a main body and a positioning portion bending and extending from an edge of the main body, the positioning portion is used for ensure concentricity of the diaphragm when the diaphragm is integrally formed with the dome. Compared with the related art, the speaker disclosed by the present disclosure could improve the reliability.

An attenuator is disclosed that enables a microphone's relatively undistorted pick up of a voice that is generated in close proximity to the microphone. This attenuator is a key component of a groundbreaking assistive device or handset / headset that empowers individuals with speech impairments to effectively communicate and reintegrate into society. By leveraging advanced acoustic hardware, intelligent voice algorithms, and a comprehensive image-or-vocabulary-to-impaired-voice database, the handset / headset facilitates understanding the user's impaired speech by harvesting understood terminology and outputting the same in a communicative context. Thus, the handset / headset enables seamless public interaction, independence, and improved quality of life to the user with speech impediments and ensures equal participation and inclusion in everyday verbal interactions.

A loudspeaker having a frame, a diaphragm, a support element for the diaphragm, and a magnetic circuit that includes a yoke, a core and a magnet. The yoke and the core form an air gap. An upper portion of a coil is connected to the diaphragm and a lower portion of the coil is in the air gap. The diaphragm includes inner, outer and intermediate annular portions. The inner annular portion includes an arch-shaped first central section and a first inner edge connected to the support element and a first outer edge. The outer annular portion includes an arch-shaped second central section, a second inner edge and a second outer edge connected to the frame. The intermediate annular portion includes a dome-shaped section with downwardly-facing concavity and from which a funnel-shaped section extends. The funnel-shaped section converges towards the support element and is connected to the first outer edge.

A loudspeaker assembly for producing sound at bass frequencies. The loudspeaker assembly includes: a loudspeaker, including: a diaphragm having a first radiating surface and a second radiating surface, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm; a drive unit configured to move the diaphragm along a movement axis at bass frequencies such that the first and second radiating surfaces produce sound at bass frequencies, wherein the sound produced by the first radiating surface is in antiphase with sound produced by the second radiating surface; a drive unit frame, wherein the diaphragm is suspended from the drive unit frame via at least one drive unit suspension; and a mounting frame, wherein the drive unit frame is suspended from the mounting frame via a mounting frame suspension system that includes at least one mounting frame suspension. The loudspeaker assembly also includes an adjustment mechanism configured to adjust the mounting frame suspension system so as to change the extent to which vibrations generated by the loudspeaker reach the mounting frame via the mounting frame suspension system when the loudspeaker is in use.

A speaker includes a diaphragm assembly and a magnetic circuit assembly. The diaphragm assembly includes at least two voice coils. The magnetic circuit assembly includes first magnets and a second magnet. A plurality of first magnets are disposed around the second magnet. A vent groove is disposed between two adjacent first magnets. The voice coil is disposed between the second magnet and the first magnet. The speaker includes at least two magnetic circuit assemblies. The magnetic circuit assembly is disposed corresponding to the voice coil. Two adjacent magnetic circuit assemblies share a same first magnet.

To provide a diaphragm for a speaker, with appropriate energy-loss beneficial to the quality of the generated speech.SOLUTION: A diaphragm 400a includes, from top to bottom, an upper surface region 410a, a central region 430a, and a lower surface region 450a. The upper surface region, the central region, and the lower surface region are all made of a homogeneous amorphous material, and the homogeneous amorphous material includes silicon dioxide. The diaphragm is a hard, homogeneous, amorphous material with a variable internal stress, and the stress varies with the depth from the surface to the center of the diaphragm. The thickness d1 of the upper surface region 410a is preferably about 0.01 to 20 micrometers, and similarly, the thickness d1 of the lower surface region 450a is preferably about 0.01 to 20 micrometers. The thickness d2 of the central region 430 is preferably about 0.02 to 49.9 micrometers.SELECTED DRAWING: Figure 1B

A microphone assembly and an electronic device. The microphone assembly includes at least one diaphragm (101), a back plate (102) disposed opposite the diaphragm (101), and at least one air release column (103) having one end fixedly connected to the back plate (102). In a direction perpendicular to a thickness direction of the diaphragm (101), an edge portion (1032) of the other end of the at least one air release column (103) is spaced apart from the diaphragm (101) by a preset distance, thereby forming at least one air release groove (1011).

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 invention discloses a vibrating diaphragm for a sound production device, the sound production device and electronic equipment. The vibrating diaphragm comprises at least one thermoplastic polyester elastomer layer; the thermoplastic polyester elastomer layer is prepared from a blending material, and the blending material comprises a first thermoplastic polyester elastomer and a second thermoplastic polyester elastomer; the glass transition temperature of the first thermoplastic polyester elastomer is-65 DEG C to-30 DEG C, the glass transition temperature of the second thermoplastic polyester elastomer is-25 DEG C to 0 DEG C, and the creep recovery rate of the thermoplastic polyester elastomer layer in 5 minutes is 70%-99%. The vibrating diaphragm comprises at least one thermoplastic polyester elastomer layer; the thermoplastic polyester elastomer layer is prepared from a blended material. The thermoplastic polyester elastomer film layer comprises thermoplastic polyester elastomers with different glass transition temperatures, so that the low-temperature performance is ensured, good damping can be provided, and the sound production effect of the vibrating diaphragm can be further improved.

Microelectromechanical (MEMS) microphones with diaphragm trench stiffeners and methods of manufacture are provided. The MEMS microphone includes a flexible plate and a rigid plate mechanically coupled to the flexible plate. The MEMS microphone includes a stop member secured to the rigid plate and extending perpendicularly relative to a surface of the rigid plate opposite a surface of the flexible plate. The stop member limits movement of the flexible plate. The rigid plate includes a reverse bend edge including a first lateral etch stop including a first corner radius and a second corner radius. The first corner radius is greater than 100 nanometers and the second corner radius is greater than 25 nanometers. Further, a lateral step width between the first corner radius and the second corner radius is less than about 4 microns.

The present application provides a speaker, which comprises a housing as well as a magnetic circuit system and a vibration system arranged the housing, the vibration system comprises a planar first voice coil which can generate mechanical motion under the action of a magnetic field of the magnetic circuit system, a planar first vibration diaphragm driven by the first voice coil, and the first voice coil is arranged on the first vibration diaphragm; the magnetic circuit system comprises a plurality of magnets, a gap is formed between the magnets, and at least a portion of the first voice coil corresponds to the gap between the magnets. The present speaker is different from a conventional moving-coil type speaker, and the speaker can be made smaller than a conventional moving-coil type speaker and with respect to high frequency performance, the speaker has higher sound pressure and a better bandwidth.

Disclosed is a vibration assembly (100), which includes an elastic element (110), which includes a central region (112), an edge region (114) disposed on the outer periphery of the central region (112), and a fixing region (116) disposed on the outer periphery of the edge region (114), and is configured to vibrate along a direction perpendicular to the central region (112), the central region (112) including an elastic member and a reinforcing member (120) laminated along the vibration direction, and the reinforcing member (120) has a plurality of groove structures (121) with openings facing the elastic member.

A non-planar body (1) comprising a dome body (2) having an apex (3) and an outer periphery, the apex (3) located on a first plane (4) and the outer periphery located on a second plane (6) substantially parallel to the first plane (4). A peripheral body (5) extends at least partially around the outer periphery of the dome body (2), and at an angle (7) of less than 180° with respect to a tangent (8) relative to the dome body (2) at the outer periphery of the dome body (2), the angle (7) being measured at an outer surface of the dome body (2). Any of the dome body (2) and the peripheral body are formed from polycrystalline diamond.

The embodiment of the application belongs to the technical field of electronic equipment, and particularly relates to a loudspeaker and an electronic device. The embodiment of the application aims to solve the technical problem that the electromagnetic driving force for driving the vibration of the voice coil is small, so that the sensitivity of the loudspeaker is insufficient. The loudspeaker and the electronic device of the embodiment of the application, the yoke iron comprises a bottom and a sleeve pipe located at one side of the bottom, a ring-shaped magnet is sleeved outside the sleeve pipe, the voice coil is sleeved on the sleeve pipe and located between the magnet and the sleeve pipe; the elastic wave is located in the area enclosed by the sleeve pipe, the outer edge of the elastic wave is connected with the voice coil, and the middle part of the elastic wave is connected with the yoke iron; the magnet and the voice coil are both located outside the elastic wave, the volume of the magnet and the length of the coil in the voice coil are not affected by the elastic wave, so that the volume of the magnet and the length of the coil in the voice coil can be set to be larger, and then the electromagnetic driving force for driving the vibration of the voice coil is increased, and the sensitivity of the loudspeaker is improved.