206results about "Diaphragm extensions" patented technology

The invention discloses a diaphragm for a sounding device, a sounding device and an assembling method thereof. The diaphragm includes a diaphragm layer prepared by subjecting at least one of an ethylene-acrylate copolymer and an ethylene-acrylic ester-carboxylic acid copolymer to crosslinking reaction. The molecular structure of the diaphragm includes a vinyl-acrylic group. The group reduces the chemical structure symmetry of a material, reduces tacticity, and increase steric hindrance, so that the diaphragm has a high loss factor and the sounding device has a good damping effect.

One embodiment of a low-profile transducer includes a at least one fin perpendicularly mounted on a planar diaphragm, with a voice coil mounted onto the fin. The voice coil may reside in a strong uniform magnetic field. The locations at which the diaphragm is connected to a frame may be coplanar with a center of mass of the diaphragm. The three-dimensional structure of diaphragm and fins may be formed using origami techniques.

The invention discloses a loudspeaker diaphragm and a loudspeaker. The loudspeaker diaphragm comprises a thermoplastic polyester elastomer film layer, wherein a thermoplastic polyester elastomer is acopolymer composed of a polyester hard segment A and polyether or an aliphatic polyester soft segment B, the glass transition temperature of the thermoplastic polyester elastomer film layer is less than or equal to 20DEG C, and the thermoplastic temperature of the thermoplastic polyester elastomer film layer is 50DEG C to 200DEG C.

An acoustic transducer has a substrate having an opening in an upper surface thereof, a vibration electrode plate disposed above the substrate, and having an outer edge thereof facing the upper surface of the substrate with a gap therebetween, a fixed electrode plate facing the vibration electrode plate, and a plurality of projections protruding on a lower surface of the outer edge of the vibration electrode plate. The vibration electrode plate covers an upper side of the opening. The plurality of projections are disposed so as to not be positioned along a straight line or a curved line parallel to an edge of the opening in at least a part of one or at least two arrays formed on the lower surface of the outer edge.

The invention discloses a speaker device, which comprises a vibration system, a magnetic circuit system and an auxiliary system for accommodating and fixing the magnetic circuit system and the vibration system. The vibration system comprises a centring disk. The centring disk comprises a first fixing portion, a second fixing portion disposed in the first fixing portion, and a connecting arm connecting the first fixing portion and the second fixing portion. The center position of the second fixing portion is provided with a piezoelectric patch, the centring disk is provided with a first bonding pad corresponding to the piezoelectric patch, and the piezoelectric patch is connected electrically with the first bonding pad. The second fixing portion is provided with an antenna circuit. According to the invention, a signal produced by the piezoelectric patch can effectively improve the medium-high frequency effects of the speaker device and the acoustic performance of the speaker device; the antenna circuit combines an antenna device with the speaker device integrally; and the speaker device has the advantages of excellent acoustic performance, high integrated design and multiple functions.

A loudspeaker magnet assembly for a loudspeaker transducer having a voice coil is provided that has a low profile construction. The loudspeaker magnet assembly may include: a first magnet assembly; top plate position below the first magnet assembly; second magnet assembly positioned below the top plate; and bottom plate positioned below the second magnet assembly. The first magnet assembly may include an annular outer magnet and a circular inner magnet. The top plate may include an annular outer top plate and a circular inner top plate and the second magnet assembly may include an annular outer magnet and a circular inner magnet.

A sound system producing characteristic sounds from an acoustic instrument is provided. The sound system may include a stringed musical instrument and an electronic audio subsystem. The stringed musical instrument may include a neck extending away from a body toward a head. A plurality of strings may be stretched from a bridge on the body to the head at a terminal end of the neck. The bridge may be coupled to a soundboard and operable for connecting the plurality of strings to the body. The electronic audio subsystem may include at least one distributed mode loudspeaker. The distributed mode loudspeaker may be attached to the soundboard of the stringed musical instrument. The distributed mode loudspeaker may induce uniformly distributed vibration modes in the soundboard. A power amplification device may be disposed inside the body of the stringed musical instrument to provide power to the distributed mode loudspeaker.

An acoustic apparatus includes a back plate, a diaphragm, and at least one pillar. The diaphragm and the back plate are disposed in spaced relation to each other. At least one pillar is configured to at least temporarily connect the back plate and the diaphragm across the distance. The diaphragm stiffness is increased as compared to a diaphragm stiffness in absence of the pillar. The at least one pillar provides a clamped boundary condition when the diaphragm is electrically biased and the clamped boundary is provided at locations where the diaphragm is supported by the at least one pillar.

A slim speaker includes a casing having an enlarged front opening and a rear end with a magnetic circuit mounted thereto; a voice coil located over a central area of the magnetic circuit; a diaphragm located between the enlarged front opening of the casing and the voice coil; and a damper located behind the diaphragm to space from the latter. The diaphragm has at least one V-shaped bent section provided at a middle portion for bearing on a corresponding position on the damper. With these arrangements, the diaphragm not only has an effectively reduced overall height to largely reduce the assembled volume of the slim speaker and allow the slim speaker to be easily mounted in the limited inner space of an electric product, but also stabilizes the vibration of the voice coil to enable good resonance of sound.

A casing for covering an outer yoke is provided; an acoustic cavity is formed by this casing; a diaphragm and the outer surface of a side wall of the outer yoke; a second elastic member is provided to join the outer circumferential edge of the casing to the outer circumferential edge of the diaphragm without any gap therebetween; this second elastic member includes pores formed by foaming and made of a material whose elastic modulus is smaller than that of a first elastic member; and pores communicating through from the back surface of the second elastic member, that is the inner side of the casing, to the front surface that is the opposite side of the back surface are eliminated.

The present invention discloses hyperelastic silica gel vibrating diaphragm materials. The hyperelastic silica gel vibrating diaphragm materials are made of silicone rubber and other auxiliary materials for mixing, upper and lower isolation membranes form a sandwich structure, a sandwich layer formed through hot press molding is the silica gel vibrating diaphragm materials through the hot press molding. The hyperelastic silica gel vibrating diaphragm materials are used for vibrating diaphragms of a loudspeaker and a receiver, are low in elasticity modulus and good in damping effect, and the made loudspeaker product is lower in the resonant frequency F0 compared to a loudspeaker made of other traditional materials, is better in the low-frequency distortion rate, and is lower than 10%.

The present invention provides a flat speaker, in particular in the aerospace sector, with a panel for generating acoustic signals by vibration of the same, and a vibration exciter which is connected to a panel and excites this to vibrate. Here the panel has an edge stiffening. This provides the panel with the required stiffness, particularly against hand pressures, but at the same it guarantees high energy efficiency of the flat speaker.

The invention provides a silica gel diaphragm assembly structure for a loudspeaker, and a preparation method. The structure comprises a central paster; a silica gel diaphragm which generates a sound signal through vibration deformation; a supporting part which supports the silica gel diaphragm. The silica gel diaphragm further comprises an edge part which has a plurality of attaching surfaces with the supporting part; a central part which has a plurality of attaching surfaces with the central paster; and a folded ring which is integrated with the edge part and the central part. The structure is simple and compact in structure, can improve the waterproof performance of the silica gel diaphragm, and is convenient to take and locate.

Systems and apparatuses are provided for vibration confinement and stress management in a loudspeaker. In one embodiment, the loudspeaker comprises a diaphragm that extends from an inner diaphragm region (e.g., dome or cone-shaped) to an outer diaphragm region, wherein the outer diaphragm region bends at a defined angle (e.g., between about 45 degrees and about 135 degrees) relative to the inner diaphragm region. The loudspeaker also comprises a suspension member extending from an inner suspension region to an outer suspension region, the inner suspension region overlapping and attaching with the outer diaphragm region. The bend in the diaphragm isolates the inner diaphragm region from spurious vibrations in the suspension member.

The invention provides loudspeaker drum paper, a preparation method thereof and a loudspeaker comprising the same, and relates to the technical field of loudspeakers. The loudspeaker drum paper comprises a carcass, and the carcass surface is coated with pigment coating. The drum paper can alleviate the technical problems of single drum color, low production rate of other color drum paper, and highproduction cost of the existing drum paper, and the technical effects of improving the diversity of the color of the drum paper, reducing the production cost and increasing the yield are achieved.

The invention provides a speaker diaphragm. The speaker diaphragm comprises Kevlar fiber woven cloth and a PMI composite layer, wherein the PMI composite layer comprises more than one PMI layer of different densities. Base materials of the diaphragm comprise woven KEVLAR fiber and a PMI foaming material. The reason of using the two materials is that the two materials have very similar physical characteristics, like high rigidity, high modulus, low density, high temperature resistance (-190DEG C-200DEG C) and very low coefficient of thermal expansion, high corrosion resistance, and high fatigueresistance; further, the two materials have equal direction mechanical property, that is, isotropy. The internal damping can be adjusted, so that the internal damping of the overall diaphragm can beadjusted by changing the density of a rear damping material, then the resonance property of the composite diaphragm can be changed, the resonance frequency of the diaphragm is far from the working frequency range, therefore, in the effective working frequency range, segmentation vibration is reduced to the greatest extent, then distortion is lowered.

The invention provides a loudspeaker unit and a loudspeaker device. The main body of the loudspeaker unit is a rectangular basin structure, including a suspension system, a magnetic circuit system with an annular magnetic gap and a basin frame connecting the suspension system to the magnetic circuit system; the basin frame accommodates the suspension system and the magnetic circuit system, and themagnetic circuit system is fixed in the basin frame; the suspension system comprises a vibrating diaphragm and at least one voice coil connected to the bottom of the vibrating diaphragm; the magneticcircuit system comprises at least one magnetic circuit component matching the voice coil; one end of the voice coil is connected to the vibrating diaphragm through a voice coil framework, and the other end of the voice coil is placed in the annular magnetic gap formed by the magnetic circuit component; the voice coil can perform piston reciprocating vibration along the axial direction in the annular magnetic gap to push the vibrating diaphragm to vibrate to emit sound. The invention adopts a plurality of engines to drive the same vibrating diaphragm vibrate, and the vibration is more balancedand stable, which can reduce nonlinear vibration, and can control the size of the impedance RE; the invention has wide application range and beautiful structure, and can realize sufficient heat dissipation.

The invention relates to a dual-surround diaphragm, a loudspeaker and a mobile terminal. The dual-surround diaphragm comprises: an inner dome, an inner surround, an outer dome and an outer surround. The dual-surround diaphragm is used in the loudspeaker. By means of a multi-surround principle, a diaphragm is provided with the inner surround and the outer surround so that the area of the surround is increased. Thus, the proportion of low frequency is increased so as to obtain a good reductive effect and achieve pleasant sound. The loudspeaker is provided inner and outer voice coils and the inner and outer domes so as to increase the vibration amplitude of the inner dome. The vibration amplitude of the inner dome directly affects the volume of the loudspeaker, thereby improving the loudspeaker volume.

A multiple engine array system and speaker. The multiple engine array system includes at least two engine components, the at least two engine components are mounted at the bottom of the basin rack ofthe loudspeaker, each of the engine components includes a voice coil provided with a voice coil skeleton and a magnetic circuit system for providing a magnetic field to the voice coil, the magnetic circuit system comprises a magnetic bowl, a magnetic and a magnetic conductive plate , the magnetic bowl is arranged at the bottom of the basin rack, the magnetic and the magnetic conductive plate arearranged in the magnetic bowl, a magnetic gap is formed between the magnetic bowl and the magnet and the magnetic conductive plate, the voice coil is suspended in the magnetic gap, and the cross-sectional shapes of the voice coil and the magnetic circuit system are rectangular. The invention has wide application range, can effectively reduce power consumption, improve loudspeaker efficiency, reduce resonant frequency, improve heat dissipation effect, and can reduce various distortions such as non-linear distortion through cooperation and restriction of a plurality of engine components.