Diaphragm Patents (Class 181/157)
  • Patent number: 11425489
    Abstract: A passive radiator and a loudspeaker system are provided. The passive radiator comprises: a radiating surface with geometry providing two surfaces with vertical separation, which are a first surface and a second surface; a primary suspension element, one end of which is connected to the first surface of the radiating surface; and a secondary suspension element, one end of which is connected to the second surface of the radiating surface.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: August 23, 2022
    Assignee: Goertek Inc.
    Inventor: Michael Childs
  • Patent number: 11356760
    Abstract: An audio device includes a thin film material having a capacitive property, the thin film material including an acoustic sheet having a curved shape, in which the acoustic sheet includes a first region that is actively driven by an input signal and a second region that is not actively driven by the input signal and the first region is formed in at least a part of an outside of the second region.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: June 7, 2022
    Assignee: Sony Corporation
    Inventors: Toshiyuki Nakagawa, Yoshio Ohashi
  • Patent number: 11164559
    Abstract: Passively controlled acoustic metamaterials allow transmission of low amplitude acoustic (sound) waves having a resonance frequency and reflect waves having a substantially different frequency. Such materials also reflect waves having the resonance frequency when those waves have an amplitude exceeding a threshold. High amplitude resonance waves cause a resonance membrane contained in unit cells of the metamaterial to contact a rigid structure that is positioned at a longitudinal constraint distance from the resonance membrane in each unit cell. Such contact changes the resonance frequency of the membrane, thereby causing reflection of high amplitude waves. Actively controlled acoustic metamaterials include a ferromagnetic layer on the membrane and an electromagnetic positioned in each unit cell. Activation of the electromagnetic displaces the membrane and thereby shifts the resonance frequency of the membrane, on demand.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: November 2, 2021
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Taehwa Lee, Hideo Iizuka
  • Patent number: 11051111
    Abstract: A dynamic loudspeaker driver comprising a magnet-system; a membrane; the membrane being movably mounted with respect to the magnet-system; at least one voice coil attached to the membrane and operatively coupled with the magnet-system, wherein the voice coil comprises an upper edge facing the membrane and a lower edge being arranged opposite the upper edge of the voice coil; at least one voice coil extension element comprising an upper surface facing the membrane and a lower surface facing the upper edge of the voice coil, wherein the lower surface of the voice coil extension element is attached the upper edge of the voice coil while the upper surface of the voice coil extension element is attached to the membrane.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: June 29, 2021
    Assignee: Sound Solutions International Co., Ltd.
    Inventors: Franz Heidinger, Erich Klein, Ernst Tomas
  • Patent number: 11032635
    Abstract: The present invention provides a speaker, which includes a basket, a diaphragm fixed to the basket, and a voice coil located below the diaphragm and used for driving the diaphragm to vibrate and sound. The diaphragm includes a dome and a folded ring, and the dome includes first side edges arranged oppositely and second side edges connected with the first side edges and arranged oppositely. The dome includes two or more opening portions disposed separately along the first side edge or the second side edge, and an extended portion is arranged between two adjacent opening portions.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: June 8, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Tong Zhang
  • Patent number: 11026016
    Abstract: A low cost/high efficiency passive radiator module component includes: a tubular ported cavity structure adapted for placement inside an acoustic enclosure with a port communicating out of the acoustic enclosure and one or more pairs of passive radiators symmetrically oriented and supported on opposing side walls of the ported cavity each having a predetermined or tuned mass distribution, stiff acoustic radiating diaphragm surfaces, and spaced apart inner and outer suspensions configured to suppress diaphragm wobble that induces each pair to symmetrically vibrate inertially responsive to variable sound pressure pulses originating from an active acoustic radiator within the acoustic enclosure. Different variable acoustic pressure pulses may be detected inside and outside the ported cavity; the constricting horn connecting to the ported cavity from outside may be tuned by horn loading to achieve a desired effect.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: June 1, 2021
    Inventor: Joseph Yaacoub Sahyoun
  • Patent number: 11026015
    Abstract: The present invention provides a speaker, which includes a basket, a diaphragm fixed to the basket, and a voice coil located below the diaphragm and used for driving the diaphragm to vibrate and sound. The diaphragm includes a dome and a folded ring. The dome includes two first straight edges arranged oppositely and two second straight edges connected with the two first straight edges, the dome includes a central portion and an edge portion, the edge portion includes a first region arranged along the first straight edge and a second region arranged along the second straight edge, and both the first region and the second region are provided with an opening portion penetrating through the dome along a vibration direction.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: June 1, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Tong Zhang
  • Patent number: 10924861
    Abstract: A speaker is provided, including a holder, a diaphragm fixed to the holder, and a voice coil located under the diaphragm and configured to drive the diaphragm to vibrate to sound. The diaphragm includes a diaphragm body, a protruding portion extending from the diaphragm body while being bent towards the voice coil, and a dome fitted to the protruding portion. The protruding portion includes a first wall and a second wall connected to the first wall and parallel to the diaphragm body. The diaphragm body is provided with a suspension disposed around the dome. The speaker of the present disclosure has the diaphragm of an improved structure, which greatly increases the adhesion between the dome and the diaphragm, effectively improves the reliability of the product, reduces the total harmonic distortion, and improves the acoustic performance of the product.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 16, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Aixin Chen, Minmin Chen, Bin Zhao
  • Patent number: 10924863
    Abstract: The present disclosure relates to the field of sound production, and provides a diaphragm including a dome and a suspension surrounding the dome. The dome includes a first surface fixedly connected to the suspension, and a second surface disposed opposite to the first surface and facing away from the suspension. The dome is provided with a through hole in communication with the first surface and the second surface, and the through hole is adjacent to edges of the dome but does not reach the edges of the dome. The present disclosure further provides a speaker including the diaphragm. The diaphragm and the speaker according to the present disclosure have the advantages of ensuring the strength of the dome while ensuring the leakage of the glue inside the speaker.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 16, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Hongjian Hu, Shuai Li, Min Su
  • Patent number: 10869130
    Abstract: Disclosed are a diaphragm and a loudspeaker using the diaphragm. The diaphragm comprises an edge, a fixing section formed by the edge's outer edge extending outward, and an intermediate section formed by the edge's inner edge extending inward, wherein the edge is disposed with a plurality of stiffeners extending from the edge and across the edge's inner edge to the intermediate section. The loudspeaker includes the diaphragm. The stiffeners disposed on the edge extend to the intermediate section, which increases strength of the inner of the edge, especially of the curved sections. In this way, strength of the edge and stability and pure tone matters of the diaphragm during practical applications may be improved.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 15, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Hao Chen
  • Patent number: 10820105
    Abstract: The present disclosure provides a speaker having a lower magnetic conductive plate for carrying a magnet thereon and an upper magnetic conductive plate engaging with the lower magnetic conductive plate. The lower magnetic conductive plate includes a first oblique portion and a first horizontal portion for increasing an outer diameter of the lower magnetic conductive plate. The upper magnetic conductive plate includes a second oblique portion and a second horizontal portion both for increasing an outer diameter of the upper magnetic conductive plate. The lower and upper magnetic conductive plates cooperatively form a receiving space for accommodating a suspension to support a coil assembly. The lower magnetic conductive plate further includes a protruding portion extending perpendicularly from a middle portion of the bottom for carrying the magnet. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.
    Type: Grant
    Filed: July 28, 2019
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Wei Song
  • Patent number: 10771900
    Abstract: A speaker diaphragm structure is installed inside a sound generator device which comprises a frame, a speaker diaphragm structure installed within the frame and a suspension edge whose inner perimeter is connected to the speaker diaphragm structure and whose outer perimeter is connected to the frame; herein the speaker diaphragm structure includes a diaphragm body and a composite material layer, in which the composite material layer is used for bonding onto the surface of the diaphragm body or attaching within the diaphragm body; moreover, the composite material layer is composed of one or more types of tetrapyrrole compounds as well as one or more types of metal ions; additionally, the composite material layer has a thickness smaller than the thickness of the diaphragm body, and is mainly applied to provide the performance effect of sound quality modifications.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: September 8, 2020
    Assignees: FU JEN CATHOLIC UNIVERSITY, MICRO LITHOGRAPHY INC.
    Inventors: Ching-Bore Wang, Chien-Sheng Chen, Hao-Zhi Li, Wei-Jen Lee
  • Patent number: 10750288
    Abstract: A speaker with a hidden folding ring includes a basin frame, a magnetic circuit system mounted on the basin frame, a voice coil disposed in a magnetic gap of the magnetic circuit system and a diaphragm. The diaphragm is of a concave structure, and an outer edge end of the diaphragm is connected to an inner bracket of the basin frame through a folding ring. The folding ring is located below the diaphragm, so that a cavity formed between the folding ring and the basin frame. An inner peripheral end of the diaphragm engaged to the voice coil. The present invention effectively increases the radiation area of the diaphragm, and obtains a higher SPL than the existing speaker of the same size, thereby improving the acoustic performance of the speaker.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: August 18, 2020
    Assignee: TYMPHANY ACOUSTIC TECHNOLOGY (HUIZHOU) CO., LTD.
    Inventors: Zhi Chen, Shao Lin Yang
  • Patent number: 10674274
    Abstract: The present disclosure provides a speaker having a magnetic yoke with a receiving space, a magnet coupled to the magnetic yoke, a diaphragm located above the magnetic yoke, and a coil assembly for driving the diaphragm. The magnetic yoke includes a bottom for carrying a first magnet, and a supporting portion extending from the bottom. The magnet includes a first magnet on the bottom and a second magnet mounted on the supporting portion. The speaker further includes a suspension accommodated in the receiving space. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.
    Type: Grant
    Filed: July 28, 2019
    Date of Patent: June 2, 2020
    Assignee: AAC Technologies Pte, Ltd.
    Inventor: Wei Song
  • Patent number: 10631092
    Abstract: The present disclosure provides a speaker having a magnetic conductive element including a lower magnetic conductive plate for carrying a magnet thereon and an upper magnetic conductive plate engaging with the lower magnetic conductive plate. The lower magnetic conductive plate includes a first oblique portion and a first horizontal portion extending from the first oblique portion both for increasing an outer diameter of the lower magnetic conductive plate. The upper magnetic conductive plate includes a second oblique portion and a second horizontal portion both for increasing an outer diameter of the upper magnetic conductive plate. The lower and upper magnetic conductive plates cooperatively form a receiving space for accommodating a suspension to support a coil assembly. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.
    Type: Grant
    Filed: July 28, 2019
    Date of Patent: April 21, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Wei Song
  • Patent number: 10506335
    Abstract: An electroacoustic transducer includes a diaphragm, a frame disposed to surround a rim portion of the diaphragm, a front support body and a rear support body that couple the diaphragm and the frame, and a magnetic circuit provided with an annular magnetic gap facing a rear face of the diaphragm. The electroacoustic transducer further includes a voice coil body having a rear end disposed in the magnetic gap and a front end coupled to the diaphragm.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 10, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shinya Kagawa, Mitsukazu Kuze
  • Patent number: 10462561
    Abstract: The present invention relates to an audio generator comprising, a first and a second transducer element, and the first transducer element has a first membrane having a surface which is non-flat, and a reflector, wherein the reflector has a surface with a non-flat contour and the reflector co-operating with directive guiding walls so as to lead and guide audio pressure waves to propagate in predetermined directions.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: October 29, 2019
    Assignee: KPO Innovation AB
    Inventor: Olle Ekedahl
  • Patent number: 10362390
    Abstract: The present disclosure provides a vibration diaphragm. The vibration diaphragm includes a vibration part; a suspension extending from and surrounding the vibration part; and a pattern module part formed on the vibration part. The pattern module part includes a protrusion extending outwardly from the vibration part and having a groove recessed inwardly toward the vibration part; a partition dividing the groove into at least two rooms; and a second protrusion located in each of the rooms. By virtue of the configuration of the pattern module part, the solution described by the present embodiment increases the surface area of the vibration part, and widens the bandwidth of the vibration diaphragm, and further improves the acoustic performance of the diaphragm.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 23, 2019
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Xiaojiang Gu, Meiwei Wu
  • Patent number: 10349166
    Abstract: A low cost/high efficiency passive radiator module component includes: a ported cavity structure adapted for placement inside an acoustic enclosure with a port communicating out of the acoustic enclosure and one or more pairs of passive radiators symmetrically oriented and supported on opposing side walls of the ported cavity each having a predetermined or tuned mass distribution, stiff acoustic radiating diaphragm surfaces, and spaced apart inner and outer suspensions configured to suppress diaphragm wobble that induces each pair to symmetrically vibrate inertially responsive to variable sound pressure pulses originating from an active acoustic radiator within the acoustic enclosure. Different variable acoustic pressure pulses may be detected inside and outside the ported cavity; the constricting horn connecting to the ported cavity from outside may be tuned by horn loading to achieve a desired effect.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 9, 2019
    Inventor: Joseph Yaacoub Sahyoun
  • Patent number: 10231042
    Abstract: Provided is a speaker device in which reproduction sound pressure is increased, and heat resistance and water resistance are improved. The speaker device includes: a diaphragm formed of a film containing polyimide; and a frame for supporting the diaphragm. A cross-section passing the center of the diaphragm and parallel to a sound emission direction includes sequentially from an inner periphery to an outer periphery of the diaphragm along the sound emission direction: a first bent plate portion having a concave arc; a second bent plate portion having a convex arc; a third bent plate portion having a concave arc; and a fourth bent plate portion having a convex arc. An area of the first bent plate portion is larger than any of areas of the second, the third, the fourth bent plate portions.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 12, 2019
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION, ANDEN CO., LTD.
    Inventors: Kazuaki Watanabe, Junichi Sato, Susumu Miyata, Makoto Tsuruta
  • Patent number: 10200802
    Abstract: An inverted button cap of an electroacoustic transducer has a diaphragm, a bobbin coupled to the diaphragm, and a dust cap supported by the bobbin and coupled to the diaphragm via the bobbin. The dust cap includes a concave surface that faces outwardly away from the bobbin. According to an example, an adhesive joint couples the diaphragm, dust cap, and the bobbin to provide a seal at the junction of the diaphragm and the bobbin. A convex surface of the dust cap, opposite the concave surface, extends into a cavity formed by the bobbin.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: February 5, 2019
    Assignee: BOSE CORPORATION
    Inventor: Scott Diehl
  • Patent number: 10187729
    Abstract: A voice emitting device of a speaker is provided. The magnetic vibration element is a larger diameter and thus has a greater driving force. In use, if a greater voice is needed, the structure provided may achieve the effect without operation at full power. Because even the voice emitting device is not worked in full power, the sound quality is good. Furthermore, because the magnetic vibration element of the voice emitting device is larger, a longer impact length is provided. Therefore the response in a low frequency is good and thus the sound quality in lower frequency is not affected.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: January 22, 2019
    Inventors: Hsin-Yi Huang, Ching-Hui Huang
  • Patent number: 10067099
    Abstract: An ultrasonic sensor has: a diaphragm that includes at least two partial regions for emitting and/or receiving ultrasonic signals, the two partial regions possessing different resonance characteristics; and at least one electromechanical transducer coupled to the diaphragm, to which transducer a control signal having at least two different control signal frequencies is applied. In this context, a first control signal frequency is in the range of a resonant frequency of a first partial region of the diaphragm, and a second control signal frequency is in the range of a resonant frequency of a second partial region of the diaphragm. Alternatively, two electromechanical transducers are used, which are coupled to a diaphragm and have different resonance characteristics.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: September 4, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Matthias Karl
  • Patent number: 9900698
    Abstract: The disclosure relates to an audio device that includes a diaphragm having a graphene material, such as a graphene flake, that is incorporated into a base material. The audio device may form part of a speaker device, a microphone device, or a headphone device. The concentration of the graphene and/or a size of the graphene flakes may be varied throughout the diaphragm to define a stiff center portion and a flexible portion that surrounds the center portion.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 20, 2018
    Assignee: Apple Inc.
    Inventors: Victor Luzzato, Joseph C. Poole, Christopher D. Prest
  • Patent number: 9763010
    Abstract: A vibration unit includes an encircling frame defining a vibration cavity therewithin, a vibration member disposed in the vibration cavity, and a suspension including an elastic diaphragm having a periodical wave-shape extended between the vibration member and the encircling frame to support the vibration member within the vibration cavity. The wave-shape diaphragm provides a 3-dimensional connection between the vibration member and the encircling frame to self-generate a repelling force to against a lateral movement of the vibration member so as to ensure the vibration member to be reciprocatingly moved in a linear direction.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: September 12, 2017
    Inventor: Hsin Min Huang
  • Patent number: 9693143
    Abstract: The invention relates to a multi-layer composite for the production of membranes for electroacoustic transducers, comprising a first and second cover layer, a first and second damping layer and a separating layer, the first and the second damping layer consisting of adhesive compositions the respective glass transition temperatures TG (DSC) of which differ by at least 10 K.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: June 27, 2017
    Assignee: TESA SE
    Inventors: Nicolai Böhm, Michael Egger, Mark Hänle, Alexander Herrmann, Bernhard Müssig, Andreas Westphal, Falk Hunger, Gero Maatz
  • Patent number: 9658601
    Abstract: The acoustic radiating membrane is provided to equip a musical watch or a striking watch. The dome-shaped membrane comprises an active central portion, a lateral wall and a peripheral edge portion for holding the membrane in a watch case. The central part is configured in a convex shape or a conical shape and with dimensions devised to amplify a first vibration mode of one or more notes within a frequency range of between 500 Hz and 3.5 kHz.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: May 23, 2017
    Assignee: Montres Breguet S.A.
    Inventors: Polychronis Nakis Karapatis, Younes Kadmiri, Davide Sarchi
  • Patent number: 9628917
    Abstract: Breakup of an electro-acoustic transducer is disrupted by introducing discontinuities that do not conform to a configuration having n-fold radial symmetry. This may be accomplished by using irregular azimuthal spacing and/or by having a junction point of the discontinuities offset relative to the geometric center of the moving surface. The discontinuities may be implemented on one or more of the moving sound producing components, such as on a diaphragm and/or dust cap of the electro-acoustic transducer. A bridging member may be introduced to span the discontinuities to stiffen the sound producing components.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: April 18, 2017
    Assignee: Bose Corporation
    Inventor: Mark Pircaro
  • Patent number: 9485583
    Abstract: A vibration unit includes an encircling frame defining a vibration cavity therewithin, a vibration member disposed in the vibration cavity, and a suspension including an elastic diaphragm having a periodical wave-shape extended between the vibration member and the encircling frame to support the vibration member within the vibration cavity. The wave-shape diaphragm provides a 3-dimensional connection between the vibration member and the encircling frame to self-generate a repelling force to against a lateral movement of the vibration member so as to ensure the vibration member to be reciprocatingly moved in a linear direction.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: November 1, 2016
    Inventor: Hsin Min Huang
  • Patent number: 9485586
    Abstract: A speaker driver with a high degree of symmetry for use in a loudspeaker is disclosed. The disclosed motor assembly may be symmetrical about its long and radial axes. A voice coil disclosed may be supported by opposing upper and lower suspensions on the voice coil upper and lower ends. The upper and lower voice coil suspensions may be adhered to a frame above and below the motor assembly, respectively.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 1, 2016
    Inventor: Jeffery K Permanian
  • Patent number: 9369810
    Abstract: An object is to provide a preferable frequency characteristic of a sound pressure. For achieving the object, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibration plate, and a frame body. The piezoelectric element receives input of an electric signal and vibrates. The piezoelectric element is attached to the vibration plate, and the vibration plate vibrates together with the piezoelectric element with the vibration of the piezoelectric element. The frame body is provided on an outer circumferential portion of the vibration plate. Corners on an inner circumferential surface of the frame body include at least curved surfaces, and at least one of the corners has a shape different from the shape of the other corners.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: June 14, 2016
    Assignee: KYOCERA CORPORATION
    Inventors: Satoru Kamitani, Shigenobu Nakamura
  • Patent number: 9294841
    Abstract: The acoustic radiator of a coaxial structure of an active region surrounded by a passive region wherein the operating area of the active region is also included as a part of the passive region. The active region includes for example a fully assembled audio speaker that is flexibly suspended in an enclosure with the flexible suspension connected between the audio speaker and the opening of the enclosure with the audio speaker never coming into direct contact with any portion of the enclosure when energized or unenergized. In such configuration, the area of the audio speaker functions as active region the audio speaker of the acoustic radiator. The passive radiator function includes both the area of the complete audio speaker and the area of the enclosure that surrounds the audio speaker. In this configuration the audio speaker is a central portion of the passive radiator and thus it can be seen that the audio speaker and the passive radiator are effectively coaxially mounted one with the other.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: March 22, 2016
    Inventor: Joseph Y. Sahyoun
  • Patent number: 9247348
    Abstract: A speaker includes a frame, a sound radiating surface, and a suspension that couples the sound radiating surface to the frame. A horizontal former is coupled to the radiating surface. The former extends substantially horizontally outward of a peripheral portion of the radiating surface, to a peripheral portion that is separate from the suspension. A coil is coupled to the peripheral portion of the horizontal former.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: January 26, 2016
    Assignee: Apple Inc.
    Inventor: Christopher Raymond Wilk
  • Patent number: 9140881
    Abstract: A VCM is disclosed, the motor including a stator including a first driving unit, a rotor arranged inside the stator, including a second driving unit responding to the first driving unit and mounted therein with a lens, a base fixing the stator, and an elastic member coupled to the rotor to float the rotor from the base in a case a driving signal for driving the first and second driving units is not applied to the first and second driving units.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: September 22, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Sang Ok Park, Seong Min Lee
  • Patent number: 9106994
    Abstract: A ultra-slim includes bass, alto membranes and acoustical element, where a surrounding embossed pattern is configured on a location adjacent to the rim of the bass membrane to form a dangling edge, and a frame stopping portion formed by a step is disposed on the center thereof. Whereby, a groove formed by a step is disposed on the center of alto membrane, and the acoustical element is formed by stacking a plurality of ceramic material layers together, thereby mounting the acoustical element on the alto membrane, and then lodging the alto membrane in the inner edge of the frame stopping element of the bass membrane to construct a thinned speaker in which sound is guided out through the bass and alto membranes after audio signals are received, capable of the application thereof to thinned products such as iPad, iPhone, cellular phones or notebook computers.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 11, 2015
    Assignee: Abatech Electronics Co., Ltd.
    Inventor: Hsiang-Chih Yu
  • Publication number: 20150136518
    Abstract: Provided is a composite diaphragm which includes a base layer and at least a graphyne including layer. The base layer has a central portion and a peripheral portion disposed at the periphery of the central portion. The graphyne including layer is disposed on the surface of the base layer. As graphyne is a lightweight and highly rigid material with a two-dimensional structure, composite diaphragms made of graphyne manifest characteristics, such as high stiffness, high toughness and low density, and thus achieve high practicability, such as high durability and high capability of producing high-definition tone.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 21, 2015
    Applicant: MERRY ELECTRONICS (SUZHOU) CO., LTD.
    Inventors: Ching-Lan LIN, Chen-Mao YANG, Wen-Hong WANG
  • Patent number: 8942407
    Abstract: A loudspeaker radiating diaphragm can be stiffened to help increase the breakup frequency to above the working frequency range of the driver concerned, by forming it of a molded part and an attached formed part. The molded part is a radiating surface with stiffening ribs. The formed part is a thin surface of high modulus material, attached to the rear of the ribs. The overall structure can have significantly higher stiffness than either of the two parts. This helps in designing a loudspeaker driver that does not breakup within its working frequency range.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: January 27, 2015
    Assignee: GP Acoustics (UK) Limited
    Inventors: Mark Alexander Dodd, Jack Anthony Oclee-Brown, Julia Davidson
  • Patent number: 8879776
    Abstract: A speaker (200) includes a cylindrical diaphragm (201) which has closed ends, an edge (202) which supports the diaphragm (201) in a manner which allows the diaphragm to vibrate, a voice coil bobbin (203) around which a voice coil (204) is wound and which is connected to the diaphragm (201), and a magnetic circuit for driving the voice coil (204).
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Hiroyuki Takewa, Shinya Kagawa
  • Publication number: 20140284135
    Abstract: A diaphragm is disclosed in the present disclosure. The diaphragm includes a middle layer, a first and a second adhesive layer attached on two side surfaces of the middle layer respectively, and a first layer adhered to the middle layer by the first adhesive layer and a second layer adhered to the middle layer by the second adhesive layer. The first adhesive layer is made of acrylic adhesive and the second adhesive layer is made of silica gel. A speaker using the diaphragm described above is also disclosed. The diaphragm can be used in a relatively wide temperature range and has a strong adaptability to the environment.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 25, 2014
    Applicant: AAC TECHNOLOGIES PTE. LTD.
    Inventor: Tao Shen
  • Publication number: 20140262599
    Abstract: The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator coupled to the diaphragm to cause movement of the diaphragm. The transducer includes a member that limits bending of the diaphragm.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: EMO LABS, INC.
    Inventors: Stefan Bokaemper, Terrence Keith Jones
  • Publication number: 20140241567
    Abstract: A diaphragm for an audio speaker includes an outer shell and an inner shell. Each shell has a face portion and an edge portion that is formed to be substantially perpendicular to the face portion. The inner shell is inserted into the outer shell such that at least a part of the edge portion of each shell is in contact with at least a part of the edge portion of the other shell and a space is formed between the face portions of each shell. A cellular core fills the space formed between the face portions of each shell and is bonded to the face portion of each shell. The outer and inner shells may have identical sizes and shapes such that there is an interference fit between the contacting edge portions. A voice coil may be supported by the edge portions.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 28, 2014
    Applicant: APPLE INC.
    Inventors: Justin D. Crosby, Martin E. Johnson, Christopher Wilk
  • Publication number: 20140182965
    Abstract: A flow controlled sound generation system is disclosed that includes one or more fluid pumps to control air flow through a sound channel. The air flow is modulated through one or more valves to produce audible frequency pressure waves.
    Type: Application
    Filed: December 31, 2013
    Publication date: July 3, 2014
    Applicant: DeftIO LLC
    Inventor: Manjirnath Chatterjee
  • Patent number: 8718317
    Abstract: An electromagnetic device includes a housing, a planar coil disposed inside the housing, and a magnetic diaphragm disposed inside the housing, wherein the plane of the planar coil is substantially in parallel with the plane of the magnetic diaphragm, wherein the planar coil is separated from the magnetic diaphragm, and wherein the magnetic diaphragm is moveable in the presence of an exterior pressure.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 6, 2014
    Inventor: Zonghan Wu
  • Patent number: 8695752
    Abstract: Deep-drawn membranes formed of polyester or polycarbonate films, comprising units of Formula (I) and (II), useful for acoustic signal converters as microphones and speakers. The film can be produced by thermoplastic processes or solvent cast processes.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 15, 2014
    Assignee: tesa SE
    Inventors: Kerstin Metzler, Bernhard Müssig, Frank Virus
  • Patent number: 8603207
    Abstract: An acoustic cleaning assembly that includes a horn assembly and a generator body that is coupled to the horn assembly. The generator body includes an inner surface that at least partially defines an outlet plenum, and an opening that extends in flow communication between the horn assembly and the outlet plenum. An end cap is coupled to the generator body and includes an inner surface that at least partially defines an inlet plenum. A diaphragm is coupled between the generator body and the end cap. The diaphragm channels air from the inlet plenum to the outlet plenum to facilitate generating sound waves within the outlet plenum.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: December 10, 2013
    Assignee: General Electric Company
    Inventors: Tian Xuan Zhang, David Michael Chapin
  • Patent number: 8567555
    Abstract: A canalphone system may include a high frequency sound bore carried within a canalphone. The system may also include a low frequency sound bore adjacent to the high frequency sound bore to form a single unit, the low frequency sound bore and the high frequency sound bore being sized so that the low frequency sound bore and the high frequency sound bore each deliver sound with similar time and phase. The system may further include a high acoustical driver carried within the canalphone where the high acoustical driver delivers sound through the high frequency sound bore. The system may additionally include a low acoustical driver carried within the canalphone where the low acoustical driver delivers sound through the low frequency sound bore.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 29, 2013
    Inventor: Jerry Harvey
  • Patent number: 8503702
    Abstract: An electret diaphragm and a speaker using the same are provided. The electret diaphragm includes an electret layer, a bonding layer adhered to a surface of the electret layer, and an aluminum (Al) electrode layer adhered on the bonding layer. The electret layer at least includes ethylene group polymer. A material of the bonding layer is ethylene-ethyl-acrylate (EEA) or ethylene-vinyl acetate (EVA).
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: August 6, 2013
    Assignees: Industrial Technology Research Institute, National Taiwan University
    Inventors: Che-I Kao, Chih-Kung Lee, Wen-Ching Ko, Chang-Ho Liou, Ing-Yih Leu, Ming-Daw Chen, Yi-Jen Chan, Chien-Kai Tseng
  • Publication number: 20130175112
    Abstract: A radial waveguide assembly comprises a transducer section and a waveguide section. The transducer section includes first and second cone loudspeakers arranged coaxially and in an opposed relationship. A compression plug having two input surfaces is mounted between diaphragms of the cone loudspeakers. Channels from the first and second cone loudspeakers feed common sound chambers located in a belt around the circular perimeter where they connect to external ports. A radial, folded waveguide has a circular throat which connects to the external ports.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 11, 2013
    Inventor: Curtis E. Graber
  • Publication number: 20130161122
    Abstract: A vibration-lead plate for a flat speaker is mounted between a voice coil plate and a vibration plate for increasing vibrational efficiency and removing the lead wire of a voice coil. The vibration-lead plate includes: a coil plate-spline, mounted between a voice coil plate having a voice coil formed in the shape of a spiral track and a vibration plate to vibrate according to the movement of the voice coil plate for generating sound, and formed in the center so as to be adhered to the voice coil plate; an edge-spline, connected to one side of the coil plate-spline and the edge of the vibration plate so as to variably correspond to vibrations; and a vibration plate outside portion, connected to one side of the edge-spline and adhered to the outside portion of the edge of the vibration plate.
    Type: Application
    Filed: August 16, 2011
    Publication date: June 27, 2013
    Applicant: EXELWAY INC.
    Inventor: Dong-Man Kim
  • Publication number: 20130070953
    Abstract: A loudspeaker radiating diaphragm can be stiffened to help increase the breakup frequency to above the working frequency range of the driver concerned, by forming it of a moulded part and an attached formed part. The moulded part is a radiating surface with stiffening ribs. The formed part is a thin surface of high modulus material, attached to the rear of the ribs. The overall structure can have significantly higher stiffness than either of the two parts. This helps in designing a loudspeaker driver that does not breakup within its working frequency range.
    Type: Application
    Filed: April 26, 2011
    Publication date: March 21, 2013
    Applicant: GP Acoustics (UK) Limited
    Inventors: Mark Alexander Dodd, Jack Anthony Oclee-Brown, Julia Davidson