2452results about "Plane diaphragms" patented technology

An air-pulse generating device includes first and second cells. The first cell includes first flap and second flaps configured to perform a first differential movement to form a first opening. The second cell includes third and fourth flaps configured to perform a second differential movement to form a second opening. The first flap and the second flap are opposite to each other and actuated to move toward opposite directions to perform the first differential movement. The third flap and the fourth flap are opposite to each other and actuated to move toward opposite directions to perform the second differential movement. The second flap of the first cell and the third flap of the second cell are actuated to move toward opposite directions and disposed adjacent to each other.

The present invention provides a coaxial speaker including a fixing member, a magnetic circuit system, a voice coil, a first vibration system connected with the voice coil, and a second vibration system connected with the voice coil and arranged surrounding the first vibration system. The second vibration system locates coaxially with the first vibration system. The first vibration system includes a first diaphragm and a first support connecting the first diaphragm and the voice coil. The second vibration system includes a second diaphragm and a second support connecting the second diaphragm and the voice coil. The first diaphragm is used for generating treble sound. The second diaphragm is used for generating bass sound. Bass sound and treble sound form a full-range speaker, providing high-quality sound. Moreover, the assembly process is simplified by sharing voice coil, which improves assembly efficiency and reduces costs.

An air-pulse generating device includes a film structure including a first flap and a second flap opposite to each other. The film structure is actuated to operate at an ultrasonic frequency, and the air-pulse generating device produces a plurality of air pulses at an ultrasonic pulse rate. The first flap and the second flap are actuated to perform a differential movement to form an opening or a virtual valve. A slit is formed between the first flap and the second flap, and the opening or the virtual valve is formed because of the slit. The slit is formed as a zigzagging pattern on the film structure.

This application provides a speaker and an electronic device. The speaker includes a ring-shaped housing, a magnetic circuit system, a first diaphragm disposed at a first end of the ring-shaped housing, a first component, a first voice coil, a second diaphragm, a second component, and a second voice coil, a first channel, and the first channel is located in at least one of the magnetic circuit system and the ring-shaped housing. The dual-diaphragm speaker in embodiments of this application has a small volume, and can improve low- and medium-frequency sensitivity.

A controller configured to control a sound producing module includes a volume controlling unit configured to determine a demodulation amplitude and a modulation amplitude corresponding to a target volume. The sound producing module comprises a driving circuit and an air-pulse generating device. The driving circuit generates a demodulation driving signal according to the demodulation amplitude and generates a modulation driving signal according to the modulation amplitude, so as to drive the air-pulse generating device. The air-pulse generating device produces sound via generating a plurality of air pulses at an ultrasonic pulse rate.

An air-pulse generating device includes a film structure including a first flap and a second flap opposite to each other. The film structure is actuated to operate at an ultrasonic frequency, and the air-pulse generating device produces a plurality of air pulses at an ultrasonic pulse rate. The first flap and the second flap are actuated to perform a differential movement to form an opening or a virtual valve. A slit is formed between the first flap and the second flap, and the opening or the virtual valve is formed because of the slit. The slit is formed as a zigzagging pattern on the film structure.

The speaker module includes a housing and a speaker. The housing has mounting space, the speaker divides the mounting space into first space and second space, and when the speaker works, a first sound wave is formed in the first space, and a second sound wave is formed in the second space, where the second sound wave and the first sound wave have equal amplitudes and opposite phases. The housing further has a third sound emitting hole and an inverter cavity, one end of the inverter cavity communicates with the second space, the other end of the inverter cavity communicates with the third sound emitting hole, the inverter cavity is configured to form a third sound wave at the third sound emitting hole when the speaker works, a phase of the third sound wave is the same as a phase of the first sound wave.

The air-pulse generating device comprises a film structure, operating at an ultrasonic operating frequency, and a resonant chamber, formed on a side of the film structure. A resonance is formed within the resonance chamber. Due to the resonant chamber, the APG device has a peak on a frequency response of an acoustic property of the APG device at the ultrasonic operating frequency.

To provide an alternative audio transducer device that works somewhat to address some of the shortcomings of existing technologies, a manufacturing method for the same, and a personal audio device.SOLUTION: An audio transducer A100 includes a diaphragm A101, a diaphragm suspension, and a transducer base structure. The diaphragm suspension includes multiple hinge mounts A107a, A107b. The transducer base structure includes a body A110 and a conductive coil A106 of a conversion mechanism. The diaphragm suspension rotatably mounts the diaphragm A101 to the transducer base structure. The diaphragm suspension is made of soft material and / or damping material. The position of the rotational axis of the diaphragm A101 is determined on the basis of a nodal axis of the diaphragm A101. The conversion mechanism of the audio transducer converts sound in cooperation with the moving diaphragm A101 and includes a design in which a magnet moves or a design in which a coil moves.SELECTED DRAWING: Figure 1F

The present disclosure provides an earphone comprising a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of the ear hook's projection on a user's sagittal plane includes a first curve having an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component on the sagittal plane. The extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane, and the upper vertex is a highest point of an inner contour of the ear hook along the user's vertical axis. An inclination angle of the long-axis direction relative to a horizontal direction is within a range of 13°-21°.

A multifunctional sound device includes a housing, a sound unit, a vibrator, and a coil. The housing includes an accommodating cavity, and the sound unit is suspended in the accommodating cavity. The sound unit includes a frame, a vibration system, and a magnetic circuit system. The vibration system is fixed in the frame, and the magnetic circuit system drives the vibration system to vibrate and generate sound along a first direction, where the magnetic circuit system includes a magnetic gap. Since the speaker and the motor share one magnetic system, the sound unit and the vibrator are assembled in the housing, which greatly reduces occupied space. The sound unit and the vibrator form a dual-vibration system, and the sound unit cooperatively vibrates with the vibrator in addition to generating sound, which improves vibration effects and further avoids adding other components, thereby saving space.

The present invention provides a speaker includes a frame, a vibration system fixed with the frame, a magnetic circuit system driving the vibration system to vibrate and sound, a flexible circuit board and an electrical connector. The vibration system includes a diaphragm and a voice coil driving the diaphragm to vibrate. The flexible circuit board is fixed on a side of the diaphragm distal to the voice coil. The flexible circuit board covers and is fixed with the diaphragm. The electrical connector passes through the diaphragm to electrically connect the flexible circuit board and the voice coil. In present invention, the flexible circuit board does not occupy a space of the magnetic circuit system, and the acoustic performance of the speaker is good.

A method of making an acoustic sensor (e.g., a piezoelectric sensor for a piezoelectric microelectromechanical systems microphone) includes forming or depositing one or more piezoelectric layers to define a beam extending between a proximal portion and a distal tip (e.g., unsupported free end), the beam having a width in plan view that is greater at a location distal of the proximal portion than at the proximal portion. The method also comprises attaching the beam to a substrate in cantilever form so that the proximal portion of the beam is anchored to the substrate and the distal tip is a free unsupported end of the beam. One or more electrodes are disposed on or in the proximal portion of the beam.

An electronic device is provided. The electronic device includes a housing, a first printed circuit board, a speaker unit including a speaker housing and a diaphragm, and a support member including a first portion surrounding a portion of the speaker unit and spaced apart from a surface of the speaker unit by a predetermined gap and a second portion extending from the first portion to cover a surface of a portion of the first printed circuit board. A first space located on one side of the diaphragm is formed in the speaker housing, and a second space in fluid communication with the first space is formed between the first portion and the surface of the speaker unit. The second portion and the first printed circuit board form at least a portion of a substantially sealed third space in fluid communication with the second space.

A package structure of a micro speaker includes a substrate having a hollow chamber. A diaphragm is disposed on the top surface of the substrate. The diaphragm includes a first portion suspended over the hollow chamber and a second portion surrounding the first portion. In a plan view, the second portion of the diaphragm and the hollow chamber do not overlap. A coil is embedded in the first portion of the diaphragm. At least one dummy structure is embedded in the second portion of the diaphragm, and it is electrically isolated from the coil structure by the diaphragm. A carrier board is disposed on the bottom surface of the substrate. A permanent magnetic element is disposed on the carrier board and in the hollow chamber. A package lid is wrapped around the substrate and the diaphragm, and has a lid opening that exposes a portion of the diaphragm.

The present disclosure may provide a sound-producing device comprising a diaphragm and a housing. The housing may include a first sound guide hole and a second sound guide hole. The diaphragm may be disposed in the housing. A first acoustic cavity and a second acoustic cavity are located on both sides of the diaphragm. The first sound guide hole is acoustically coupled to the first acoustic cavity, and the second sound guide hole is acoustically coupled to the second acoustic cavity. The first sound guide hole includes a first hole part and a second hole part. The first hole part and the second hole part are connected, the first hole part is located at a first side wall of the housing, the second hole part is located at a second side wall of the housing, and the first side wall and the second side wall are two adjacent side walls of the housing.

The present invention provides a sounding device including a housing body having a containment cavity and a sounding unit placed in the containment cavity. The sounding unit includes a vibration system and a magnetic circuit system. The sounding device includes a box, a coil, a circuit board, and an elastic assembly. The elastic assembly is used to suspend the box in the containment cavity. The present invention coil shares a magnetic circuit system with the vibration system and the sounding unit is directly used as the weight unit of the coil. The parts are shared to the greatest extent, the assembly process is simplified, and the cost is reduced.

Disclosed are a micro-electromechanical system (MEMS) structure and an MEMS microphone comprising same. The MEMS structure comprises a back plate; and a diaphragm located on one side of the back plate, wherein the diaphragm and the back plate forms a variable capacitor, the diaphragm comprises multiple first through holes and air release structures respectively corresponding to the first through holes, and the diaphragm further comprises one or more second through holes penetrating through the diaphragm.

An apparatus may include a passive vibration member and an active vibration member connected to the passive vibration member and including first and second vibration portions arranged in parallel with each other. The apparatus may further include a driving apparatus configured to apply a first driving signal to the first vibration portion and a second driving signal to the second vibration portion, based on an input signal, to vibrate the first vibration portion and the second vibration portion.

Eyewear includes at least a temple having a cavity open to the outside through first and second holes positioned opposite each other along a transversal direction. The eyewear includes a speaker assembly mounted inside the cavity, which has a speaker operable to reproduce a sound, a speaker enclosure that houses the speaker and a processing unit configured to control the operation of the speaker. The speaker includes a diaphragm designed to move in order to produce the sound, the diaphragm dividing an internal volume of the speaker enclosure into front and back cavities that are open to the outside of the speaker enclosure respectively through front and back openings. The speaker assembly is mounted inside the cavity to create an air communication between the front opening and the first hole and between the back opening and the second hole. The back opening is positioned to directly face the second hole.

The utility model relates to the technical field of audio, in particular to electronic equipment and a middle frame. The electronic equipment comprises a middle frame, a display screen and a loudspeaker module, the display screen is installed on one side of the middle frame, a sound outlet channel is formed between the display screen and the middle frame, the middle frame is provided with a communicating hole, the communicating hole is communicated with the sound outlet channel, the loudspeaker module is installed on the side, opposite to the display screen, of the middle frame, and sound emitted by the loudspeaker module enters the sound outlet channel through the communicating hole; the electronic equipment is provided with an avoiding area and a flow guide part, and the flow guide part is located between the communicating hole and the avoiding area. According to the electronic equipment, the flow guide part is arranged and is used for guiding flow, so that the flow guide part guides air in the sound outlet channel to reduce the maximum flow speed of the air in the sound outlet channel, noise is reduced, the sound quality of the electronic equipment is improved, other structures of the electronic equipment cannot be influenced, and the miniaturization design of the electronic equipment is facilitated; and the use experience of the user is improved.

A rubber voice diaphragm is composed of main rubber, distortion improving agent, vulcanizing agent, accelerant, reinforcing filler, and other processing aids. The distortion improving agent is a substance with number-average molecular weight ranging from 1000 to 1000000, and structure of distortion improving agent has special chemical crosslinking points that participate in rubber vulcanization reaction. The special chemical crosslinking points are present in amount of 0.01% to 30% based on mass of distortion improving agent. The distortion improving agent is added in amount of 0.1% to 100% based on mass of main rubber. Frequency bands for improving distortion of distortion improving agent range from 0.1 HZ to 20000 Hz. In the rubber voice diaphragm provided in the present disclosure, a special distortion improving agent is selected, which solves the problems of molecular migration, poor reliability, a high modulus change rate, and poor rubber mechanical properties existing in traditional modified method.

A diaphragm and a MEMS microphone. The diaphragm comprises a vibrating portion (1) and supporting structures (2) connected to the vibrating portion (1). Each supporting structure (2) comprises a cantilever portion (21) extending outwards from the periphery of the vibrating portion (1), and a first anchoring portion (22) and a second anchoring portion (23), both of which are connected to the end of the cantilever portion (21) away from the vibrating portion (1). The lengths of both the first anchoring portion (22) and the second anchoring portion (23) extend along the circumference of the vibrating portion (1), and the length of the first anchoring portion (22) and the length of the second anchoring portion (23) extend in opposite directions. As the lengths of both the first anchoring portion (22) and the cantilever portion (21) extend along the circumference of the vibrating portion (1), and the length of the first anchoring portions (22) and the length of the second anchoring portion (23) extend in opposite directions, the first anchoring portion (22), the cantilever portion (21), and the second anchoring portion (23) are connected to form a T shape, that is, each supporting structure is a T-shaped beam, enabling the diaphragm to have a wider range of vibration displacement, and thereby improving the sensitivity and adaptability of the MEMS microphone.

An electroacoustic transducer includes a port that guides a component of at least a partial frequency band of a sound radiated from a first diaphragm in a direction opposite to a direction in which a front surface 38A of a second diaphragm faces, to an external space on a front surface side of the second diaphragm. As the port is provided, the electroacoustic transducer is configured such that a sound pressure of a synthesized sound in the vicinity of a crossover frequency of radiated sounds from the first diaphragm and the second diaphragm in a case in which a drive unit generates vibration is equal to or higher than a sound pressure of the radiated sound from only one of the first diaphragm and the second diaphragm at the crossover frequency.

An exciter-equipped glass diaphragm, includes: a glass plate structure; and a first exciter and a second exciter, which are attached to the glass plate structure, in which, when a lowest resonant frequency of the first exciter is F1(0) (Hz), and a lowest resonant frequency of the second exciter is F2(0) (Hz), the exciter-equipped glass diaphragm satisfies: 3≤|F1(0)−F2(0)|≤100 (Hz).

An air-pulse generating device includes a film structure. The film structure is driven to form an amplitude-modulated ultrasonic air pressure variation with an ultrasonic carrier frequency. The film structure is driven to form an opening at a rate synchronous with the ultrasonic carrier frequency. The air-pulse generating device produces a plurality of air pulses according to the amplitude-modulated ultrasonic air pressure variation, and the plurality of air pulses is asymmetric.

The invention discloses a micro-speaker device including a frame, and a drum paper having a diaphragm and a surround. The diaphragm is flexibly connected to one end of the frame through the surround, thereby forming a first suspension system. A magnetic circuit structure includes a main magnetic portion and a yoke surrounding the main magnetic portion. A magnetic gap is provided between the main magnetic portion and a folded portion of the yoke. A voice coil is sleeved on an outer periphery of the main magnetic portion and penetrates into the magnetic gap. One end of the voice coil is fixed to the diaphragm. Two dampers flexibly connect the bottom of the voice coil and the bottom surface of the frame. A one-piece elastic member flexibly connects the first surface of the bottom of the yoke and the bottom surface of the frame to form a second suspension system.

The present invention provides a coaxial speaker including a frame, a magnetic circuit system, a first vibration system fixed on an inner side of the frame, and a second vibration system fixed on an outer side of the frame. The first vibration system locates coaxially with the second vibration system. The first vibration system includes a first diaphragm and a first voice coil. The second vibration system includes a second diaphragm and a second voice coil. The magnetic circuit system includes a first magnetic gap and a second magnetic gap. The first voice coil at least partially locates into the first magnetic gap, the second voice coil at least partially locates into the second magnetic gap. The first diaphragm is used for generating treble sound, and the second diaphragm is used for generating bass sound. Bass sound and treble sound form a full-range speaker, providing high-quality sound.

A vibration sounding device includes a housing, a sounding unit, and a motor vibration system. The motor vibration system includes a vibration unit and elastic components, and the vibration unit includes coils. The sounding unit includes a frame, a vibration system, a magnetic circuit system, and a front cover. The vibration system includes a first vibration system and a second vibration system. The first vibration system surrounds the second vibration system and is coaxially disposed with the second vibration system. The first vibration system includes a first vibrating diaphragm and a first voice coil. The second vibration system includes a second vibrating diaphragm and a second voice coil. The magnetic circuit system is fixed to the housing. The magnetic circuit system includes a first magnetic gap and a second magnetic gap. The vibration sounding device is small in overall thickness and in size, and excellent in acoustic performance.