142results about "Diaphragm extensions" patented technology

A diaphragm applied to a sound producing device, a sound producing device, and a method for assembling the same. The diaphragm comprises a film layer prepared by means of a crosslinking reaction of at least one of an ethylene-acrylate copolymer and an ethylene-acrylate-carboxylic acid copolymer. The molecular structure of the diaphragm comprises a vinyl-acrylic group. The group causes the material to have a less symmetrical chemical structure, a reduced tacticity and an increased steric hindrance, such that the diaphragm has a high loss factor, and the sound producing device achieves a good damping effect.

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 present invention discloses a diaphragm for a speaker including a lower surface area, a central area formed on said lower surface area, an upper surface area formed on said central area. The upper surface area, the central area and the lower surface area includes homogeneous amorphous materials. The diaphragm includes internal stress changing with a depth from the surface to the center of the diaphragm.

The embodiment of the invention relates to the technical field of semiconductor devices, and discloses an MEMS microphone and a preparation method thereof, and the MEMS microphone comprises the components of a substrate which defines a cavity; the anchoring part is arranged above the base; the vibrating membrane is provided with a beam structure, the beam structure is fixed above the anchoring part, so that the vibrating membrane covers the cavity, and the vibrating membrane and the base are arranged at an interval; the inner edge of one side, close to the vibrating diaphragm, of the substrate is provided with a chamfer. The inner edge of the side, close to the vibrating membrane, of the substrate is arranged to be the chamfer, when the vibrating membrane bends towards one side of the substrate due to vibration, the vibrating membrane can be prevented from impacting the substrate through the chamfer, or when the vibrating membrane impacts the substrate, the contact area between the vibrating membrane and the substrate is increased, stress concentration is avoided, and therefore the risk that the vibrating membrane is damaged is reduced. Therefore, the probability of failure of the MEMS microphone due to damage of the vibrating diaphragm can be reduced, and the robustness of the MEMS microphone is enhanced.

A system includes a first membrane (112), a second membrane (114) and a third membrane (116) spaced apart from one another, wherein the second membrane (114) is between the first membrane (112) and the third membrane (116), and the second membrane (114) comprises a plurality of openings (302), a sealed low pressure chamber between the first membrane (112) and the third membrane (116), and a plurality of electrodes (132, 136) in the sealed low pressure chamber.

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 relates to a vibrating diaphragm suitable for a loudspeaker. The vibrating diaphragm sequentially comprises an upper surface area, a lower surface area and an upper surface area from top to bottom, a central region; and a lower surface region; wherein the upper surface area, the central area and the lower surface area are all made of homogeneous amorphous materials, and the homogeneous amorphous materials comprise silicon dioxide; and the vibrating diaphragm is made of a hard homogeneous amorphous material with internal stress change, and the stress change is changed along with the depth from the surface to the center of the vibrating diaphragm.

The invention discloses an electric micro-electro-mechanical system (MEMS) loudspeaker, which is provided with a pair of stators and a diaphragm arranged between the stators, and is used for generating an acoustic output according to an input electro-acoustic signal. The moving part is related to the performance of the electric MEMS loudspeaker due to the symmetrical structure of the thin conductor connecting part and the rigid polyimide membrane suspended on the diagonal spring structure, and the structure is uniformly distributed on the elastic membrane. In addition, by means of the structure, the frequency bandwidth is improved, and the broadband is large. The multi-circle planar micro-coil structure is manufactured at the top and / or the bottom of the diaphragm, and a single layer or double layers can be used, so that the efficiency of the MEMS loudspeaker is improved.

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.

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 invention discloses a vibrating diaphragm assembly, a sound production device and electronic equipment. The vibrating diaphragm assembly comprises a ball top part located in the center position and a folding ring part arranged on the outer side of the ball top part in the circumferential direction, the ball top part and the folding ring part at least comprise one crosslinkable high polymer material layer of the same type, the thickness of the ball top part is larger than that of the folding ring part, the crosslinking degree of the ball top part is 50%-100%, and the thickness of the folding ring part is larger than that of the ball top part. And the crosslinking degree of the folding ring part is 0-20%. By controlling different crosslinking degrees of the ball top part and the folding ring part, the requirements of high rigidity of the ball top part and high flexibility of the folding ring part are met. The rigidity of the ball top is high, segmentation vibration is not prone to occurring in the high-frequency vibration process, and high-frequency response is good. The cross-linkable high polymer material layer of the folding ring part does not generate cross-linking or low-degree cross-linking, so that the high polymer material can keep flexibility, and the folding ring part is small in Young modulus and good in low-frequency response.

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.

The invention discloses a vibrating diaphragm assembly, a sound production device and electronic equipment. The vibrating diaphragm assembly comprises a ball top portion located at the center position and a folding ring portion arranged on the outer side of the ball top portion in the circumferential direction, the ball top portion and the folding ring portion are integrally formed in a foaming mode through the same base material, the thickness of the folding ring portion is smaller than or equal to that of the ball top portion, and the thickness of the folding ring portion is larger than that of the ball top portion. And the maximum foaming ratio of the folding ring part is smaller than that of the ball top part. According to the vibrating diaphragm assembly, the ball top part and the folding ring part are integrally foamed and formed by adopting the same base material, so that the connection strength of the ball top part and the folding ring part is remarkably improved, and a boundary line of combination of soft and hard materials existing in bonding connection of the folding ring part and the ball top part is prevented; therefore, the ball top part and the folding ring part are prevented from being peeled off in the large-amplitude vibration process, the reliability margin of the large-amplitude vibration of the vibrating diaphragm assembly is improved, the high-frequency vibration consistency is good, and the high-frequency curve is smooth.

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.

To provide a low-profile loudspeaker device capable of mutually canceling mechanical vibrations.SOLUTION: A loudspeaker device 10 comprises a first diaphragm 12 and a second diaphragm 14 that are arranged coaxially in an opposite relation to each other to mutually cancel mechanical vibrations. The first diaphragm 12 comprises a magnet 32 that is attached to a first support member 28, and multiple voice coils provided on a former 36. The second diaphragm 14 comprises a magnet 32' that is attached to a second support member, and multiple voice coils 34' provided on a former 36'. The voice coils of the first diaphragm 12 and the second diaphragm 14 are arranged in the same plane to reduce the height of the loudspeaker device.SELECTED DRAWING: Figure 1B

A method of making an acoustic sensor (e.g., for use in a piezoelectric MEMS microphone) includes forming or providing a mold having one or more grooves in a top surface of the mold that extend in a direction of the length of the mold to a distal end of the mold. The method also includes forming or depositing a structure having one or more piezoelectric layers over the top surface of the mold to define a beam, the distal portion of the beam having a corrugated section including one or more grooves that correspond to the grooves of the mold. The method also includes forming a gap in the structure to define two beams separated by the gap, and releasing the structure from the mold to form one or more cantilever beams that increases an acoustic resistance of the gap between sensors.

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.