Magnetic Circuit Patents (Class 381/412)
  • Patent number: 11455037
    Abstract: The invention relates to a control device for a motor vehicle, comprising: a tactile surface (2) for detecting the contact of the finger of a user and the movement of the finger on the tactile surface; and a haptic and/or acoustic feedback module (4) designed to make the tactile surface (2) vibrate and/or to generate an acoustic feedback for the user, in response to contact on the tactile surface (2); characterised in that it comprises a management unit (5) designed to manage the haptic feedback and/or acoustic feedback module (4) in order to generate a haptic and/or acoustic feedback of which at least one parameter of the haptic and/or acoustic feedback varies with the direction of movement of the finger on the tactile surface (2). The invention also relates to a control method.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: September 27, 2022
    Assignee: DAV
    Inventors: Stéphanie Dabic, Nour-Eddine El-Ouardi
  • Patent number: 11395071
    Abstract: A sound generator, which comprises: a housing, a vibration system and a magnetic circuit system. The vibration system and the magnetic circuit system are sequentially accommodated and fixed at a first end of the housing from top to bottom; the magnetic circuit system is provided with a rear sound hole; the housing comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system; a second end portion of the housing is integrally provided with a housing bottom wall or separately mounted with a lower cover plate; and a rear cavity which is in communication with the rear sound hole is formed between the second portion of the housing, the bottom surface of the magnetic circuit system, and the housing bottom wall or the lower cover plate.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: July 19, 2022
    Assignee: Goertek Inc.
    Inventors: Guodong Zhao, Zedong Zheng, Peijun Li, Yaqian Ji
  • Patent number: 11290823
    Abstract: The present invention discloses a loudspeaker driver comprising a magnet system having at least one gap where in each gap a voice coil assembly is arranged for movement in the gap, wherein either two distinct coils are arranged on the voice coil assembly, one above the other, and the magnet system comprises two pole pieces, one above the other, creating a pair of magnetized areas between said pole pieces and a yoke, such that a magnetic flux field is created between each pole piece and the yoke.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 29, 2022
    Assignee: DALI A/S
    Inventors: Kim Kristiansen, Lars Risbo, Bruno Putzeys
  • Patent number: 11284205
    Abstract: Apparatus and methods are described herein that provide a vibratory device that can apply a vibratory signal to a portion of a head of a user such that the vibratory signal can be conducted via bone to a vestibular system of the user and cause a portion of the vestibular system to move in a manner equivalent to that of a therapeutically effective vibratory signal applied to an area overlaying a mastoid bone of the user. The vibratory device can be associated with frequencies less than 200 Hz. The vibratory device can be effective at treating a physiological condition associated with the vestibular system.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: March 22, 2022
    Assignee: Otolith Sound Inc.
    Inventors: Jonathan Akers, Samuel Owen, Didier Depireux, Robert True
  • Patent number: 11245978
    Abstract: The present invention provides a loudspeaker, which includes a frame, and a vibration system and a magnetic circuit system, the vibration system includes a membrane and a voice coil, the vibration system further includes a yoke, and a main magnet assembly and a side magnet assembly, the side magnet assembly is spaced apart from the main magnet assembly to form a magnetic gap, and an end of the voice coil away from the membrane is suspended in the magnetic gap. The side magnet assembly includes a side magnet, and a first pole plate, the first pole plate is spaced apart from the membrane to form a spacing communicated with the magnetic gap, the loudspeaker further includes a leakage channel, one end of the leakage channel is communicated with the spacing, and another end of the leakage channel is communicated with an outside of the loudspeaker.
    Type: Grant
    Filed: August 16, 2020
    Date of Patent: February 8, 2022
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Guqing Zhang
  • Patent number: 11240605
    Abstract: A sounding device includes a frame, a vibration system and a magnetic circuit system with a magnetic gap. The vibration system includes a diaphragm and a voice coil inserted in the magnetic gap. The coil includes two first sides and two second sides. An elastic supporting member including an auxiliary diaphragm is fixed to the frame and spaced from the second sides. The magnetic circuit system includes a yoke, a main magnet fixed to the yoke, and a first auxiliary magnet and a second auxiliary magnet fixed to the yoke and spaced from the main magnet to form the magnetic gap. The second auxiliary magnet is spaced from the first side. An end portion of the second auxiliary magnet close to the auxiliary diaphragm is recessed to form an avoidance notch, and the auxiliary diaphragm extends along the first sides to form an extending portion located in the avoidance notch.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: February 1, 2022
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Wei Song, Fan Zhang
  • Patent number: 11228826
    Abstract: The present disclosure relates to a display apparatus, especially having a display panel generating sounds. A display apparatus according to the present disclosure includes: a display module; a back cover at a rear surface of the display module; a compartment provided inside the back cover; a fixing element provided inside the compartment; a sound generating unit inserted into the compartment and installed by the fixing element; and an adhesive element attaching an upper surface of the sound generating unit and the rear surface of the display module.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 18, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: GyungBo Ha, HakMo Hwang, Taehyung Kim, Seeun Kim, Seung Jun Koo
  • Patent number: 11159890
    Abstract: An acoustic receiver includes a first receiver subassembly having a bottom housing plate with a motor assembly fastened thereto, and a second receiver subassembly having a closed-ended receiver housing sidewall fastened to the bottom housing plate that includes at least one sidewall opening where a portion of the acoustic receiver is disposed in the at least one sidewall opening.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: October 26, 2021
    Assignee: Knowles Electronics, LLC
    Inventors: Yahui Zhang, Shehab Albahri, Christopher Gabel
  • Patent number: 11146872
    Abstract: Provided is an electronic keyboard instrument and sound releasing method thereof. The electronic keyboard instrument includes: a plurality of keys, a housing that supports the plurality of keys, and one or more speakers arranged in the housing. At least one of the speakers is configured as a flat-plate speaker that includes a vibrating membrane on which a pattern of a conducting wire is formed and a pair of magnet plates disposed facing both surfaces of the vibrating membrane, and the flat-plate speaker vibrates the vibrating membrane with an electromagnetic force accompanying energization of the conducting wire.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: October 12, 2021
    Assignee: Roland Corporation
    Inventor: Masaaki Matsuba
  • Patent number: 11070931
    Abstract: A speaker assembly is provided having a plurality of transducers disposed on a speaker body and configured to produce an audio beam being steerable based on at least one audio beam parameter. A light assembly is arranged on the speaker body and configured to produce a light output that varies based at least one audio beam parameter. The light output varies to provide a visual reference as the audio beam is steered.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: July 20, 2021
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Jason Walker, Emil Badal, Charles Hill, Ulrich Horbach
  • Patent number: 11057696
    Abstract: The disclosed technology relates to speaker drivers and micro-drivers, and more particularly to speaker drivers that include a woofer and a tweeter driven by a first and a second magnetic circuit, respectively, both magnetic circuits sharing a single magnet.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: July 6, 2021
    Inventor: Oren Mordechai
  • Patent number: 11057711
    Abstract: A speaker, having a firmer structure, includes a metal holder, a magnetic circuit unit including a first diaphragm, and a vibration unit including a clamp plate. The clamp plate includes long-axis edges and short-axis edges. The holder includes long edges, short edges, and corner portions. The short edge includes a first surface facing away from the first diaphragm. The short-axis edge abuts against the first surface. The short-axis edge includes a second surface facing the short edge. The corner portion includes a third surface facing away from the first diaphragm. The holder further includes a protrusion extending from the first surface in a direction facing away from the first diaphragm. The clamp plate further includes an avoiding portion formed by recessing from the second surface in a direction facing away from the short edge. The protrusion is received in and connected to the avoiding portion.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 6, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Shuwen Wu
  • Patent number: 11057712
    Abstract: A speaker includes a shell, a magnetic circuit unit, and a vibration unit. The magnetic circuit unit includes a yoke and a magnet. The yoke includes a bottom wall connected to the magnet. The bottom wall includes an upper surface close to the vibration unit, and a lower surface opposite to the upper surface. A first groove and a second groove that are spaced apart from each other are formed on the upper surface by recessing towards the lower surface. An orthographic projection of the magnet on the upper surface along a vibrating direction of the vibration unit completely covers the first groove. The second groove is arranged outside the orthographic projection. The magnet and the bottom wall are glued and connected by a glue. The glue is received in the first groove. In the speaker, the magnet is firmly connected and is unlikely to be detached.
    Type: Grant
    Filed: December 8, 2019
    Date of Patent: July 6, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Guqing Zhang
  • Patent number: 10979816
    Abstract: Provided is a speaker, including a holder, a vibration unit, and a magnetic circuit unit. The vibration unit includes a first diaphragm and a voice coil, and the voice coil includes a voice coil lead wire. A centering support is sandwiched between the first diaphragm and the voice coil, and includes a first pad portion. The magnetic circuit unit has a recessed portion formed at a position corresponding to the first pad portion. In the speaker provided by the present disclosure, the magnetic circuit unit is provided with the recessed portion to increase the distance between the magnetic circuit unit and the first pads, so that the vibration amplitude of the voice coil can be increased, thereby improving the acoustic performance of the speaker, and providing operating space for the subsequent welding process.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 13, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Dai Feng
  • Patent number: 10979818
    Abstract: A speaker is provided. The speaker includes: a vibration unit; a magnetic circuit unit configured to drive the vibration unit to vibrate and emit sound, and a frame for fixing the magnetic circuit unit. The magnetic circuit unit includes a magnetic frame and a magnet received in the magnetic frame. The magnetic frame comprises a bottom wall connected to the magnet, a side wall formed by extending from the bottom wall while being bent towards the vibration unit, and a positioning boss formed by extending from an outer side of the side wall towards the frame. The positioning boss is positioned to abut against a surface of the frame facing away from the vibration unit. Compared with the related art, the speaker is more convenient in assembling.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: April 13, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Guqing Zhang, Ronglin Linghu
  • Patent number: 10820080
    Abstract: The present disclosure provides a receiver module. The receiver module includes a receiver and a microphone. The receiver includes a holder, a vibration unit, a magnetic circuit unit, a front cover covering the holder and a cover plate. The vibration unit includes a diaphragm spaced apart from the cover plate to form a front cavity. The holder includes a holder body portion, a holder extension portion and a first through-hole. The front cover includes a front cover body portion, a front cover extension portion and a second through-hole. The microphone is fixed on a surface of the holder extension portion facing away from the cover plate. The front cavity, the second through-hole, the first through-hole and a sound inlet hole of the microphone communicate with one another. The microphone share the front cavity with receiver to absorb noise of the receiver, providing better sound effect.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Xiaojiang Gu
  • Patent number: 10820112
    Abstract: The speaker of the present invention comprises a frame, a vibration system and a magnetic circuit system. The vibration system comprises a diaphragm and a voice coil assembly for driving the vibration of the diaphragm for generating sound, the diaphragm is located on the frame, and the voice coil assembly is connected with the diaphragm and the magnetic circuit system includes a first clamping plate, a yoke, and a main magnetic and a sub magnetic disposed in the yoke. Wherein the bonding portion of the first clamping plate and the sub magnetic is provided with an adhesive groove recessed from the bonding portion away from the sub magnetic. When the first clamping plate is bonded to the sub magnetic, the glue is filled between the first clamping plate and the sub magnetic and filled in the adhesive groove.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Denglin Li
  • Patent number: 10820107
    Abstract: A speaker includes a frame having a receiving space, a vibration unit received in the receiving space, and a magnetic circuit unit for driving the vibration unit to vibrate and emit sound. The vibration unit includes a first diaphragm configured to vibrate and emit sound, and a voice coil for driving the first diaphragm to vibrate and emit sound. The speaker further includes a centering support sandwiched between the first diaphragm and the voice coil. In the speaker according to the present disclosure, by sandwiching the centering support between the voice coil and the first diaphragm, a positional conflict between the centering support and the main magnet is avoided, the main magnet can have an increased size, thereby enhancing the space utilization and sensitivity of the speaker, and improving the acoustic performance of the speaker.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Dai Feng
  • Patent number: 10812910
    Abstract: An electrodynamic transducer includes a rear frame defining an open frame interior, and a front frame enclosing the open frame interior and attached to the rear frame, the front frame including a center hub disposed about a central axis of the transducer. A movable diaphragm is positioned within the open frame interior and operably connected to the rear frame. A magnet assembly is disposed forward of the diaphragm and coupled to the center hub, the magnet assembly defining a magnetic air gap annularly disposed about the central axis. A voice coil is disposed in the magnetic air gap surrounding the magnet assembly and operably connected to the diaphragm. A first spider is coupled between the voice coil and the rear frame behind the diaphragm, and a second spider coupled between the diaphragm and the front frame and disposed forward of the diaphragm.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: October 20, 2020
    Assignee: Harman International Industries, Incorporated
    Inventors: Toni Otto Lilienthal, Alexander Voishvillo
  • Patent number: 10782784
    Abstract: There is described a tactile feedback actuator generally having a hammer path having a length extending between two opposite ends, a coil element fixedly mounted relative to the hammer path, a magnetic hammer guidingly mounted for movement along the hammer path. The magnetic hammer is electromagnetically engageable by a magnetic field emitted upon activation of the coil element so as to be longitudinally slid along the hammer path in any one of two opposite directions depending on a polarity of activation of the coil element. The tactile feedback actuator has at least one electropermanent magnet at at least one of the opposite ends of the hammer path, the electropermanent magnet having a magnetization direction aligned with the length of the hammer path, and at least one state toggling device configured for toggling a state of the electropermanent magnet between a magnetized state and an unmagnetized state.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: September 22, 2020
    Assignee: NANOPORT TECHNOLOGY INC.
    Inventor: Timothy Jing Yin Szeto
  • Patent number: 10764691
    Abstract: The present disclosure provides a speaker, including a flexible circuit board, a holder, a diaphragm received in the holder, and a voice coil for driving the diaphragm to vibrate. The flexible circuit board includes a connecting portion received in the holder and an extension portion extending from the connecting portion to outside of the holder. The voice coil is electrically connected to the connecting portion. The flexible circuit board further includes a first pad located at an upper surface of the connecting portion and electrically connected to the voice coil, and a second pad located at an upper surface of the extension portion. The extension portion is folded over with respect to the connecting portion, and a lower surface of the extension portion is attached to the holder.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: September 1, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Wei Song, Shuwen Wu, Zhiyuan Chen, Fan Zhang
  • Patent number: 10743108
    Abstract: The present application discloses a miniature speaker, including: a frame; a vibration system positioned on the frame; a magnetic circuit system for driving the vibration system. The vibration system includes a first diaphragm fixed to the frame, a second diaphragm, and a voice coil for driving the first diaphragm to produce sounds. The second diaphragm includes a suspension, a first fastening portion fixed to the frame, a second fastening portion fixed to the voice coil at an end away from the first diaphragm. The suspension includes a main suspension and a pair of auxiliary suspensions extending from two edges of the main suspension along a length direction of the main suspension. A width of the main suspension is greater than a width of the auxiliary suspension. The rigidity of the second suspension is improved, and the lateral swing of the vibration system is suppressed.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: August 11, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Bo Xiao, Ronglin Linghu
  • Patent number: 10721567
    Abstract: An electrodynamic sound transducer that includes a chassis, a membrane with a hole in the centre of the membrane, a moving coil, a magnetic system, and a resonator that is placed in the hole in the centre of the membrane.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: July 21, 2020
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Markus Kuhr, Kornelia Kaddig, Maik Schäfer
  • Patent number: 10708495
    Abstract: A universal police speaker includes an inner cavity, a voice coil, a magnet, a support plate, a diaphragm and a protecting cover to form a dome speaker structure. The inner cavity is filled with a sound absorbing material; the voice coil is installed around the inner cavity; the magnet is installed around the voice coil; the support plate is installed between the voice coil and the magnet; the diaphragm is installed at the top of the inner cavity; and the protecting cover is installed at the diaphragm. The speaker further includes a level bracket for placing the inner cavity, the voice coil, the magnet, the support plate, the diaphragm and the protecting cover, and the level bracket is disposed at the top of a car body of a police car. The invention can improve the anti-violence capability of the police speaker.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: July 7, 2020
    Assignee: YUYAO HENGZHENG METAL WARE CO., LTD.
    Inventor: Yanhua Gao
  • Patent number: 10674279
    Abstract: The present invention discloses a speaker having a frame, a vibrating system and a magnetic circuit system. The vibrating system has a vibrating diaphragm, a voice coil and an elastic supporting assembly. The magnetic circuit system has a main magnet, a secondary magnet located on two opposite sides of the main magnet, a magnetic plate stacked on the secondary magnet and spaced away from the elastic supporting assembly, and an auxiliary magnet. The magnetic plate has a main body and a supporting portion extending from the main body towards the main magnet and spaced away from the main magnet. The auxiliary magnet is fixed on the supporting portion at the sides away from the vibrating diaphragm and spaced away from the main magnet. The speaker of the present invention has advantages of good reliability and excellent acoustic performance.
    Type: Grant
    Filed: December 7, 2019
    Date of Patent: June 2, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Xiaodong Liu, Long Zhang
  • Patent number: 10674276
    Abstract: The present disclosure provides a speaker assembly, including an upper cover and a lower cover forming an accommodation space, and a speaker fixed in the accommodation space. The upper cover includes a side wall, and the speaker divides the accommodation space into a front chamber and a rear chamber. The speaker assembly further includes an insertion plate located in the rear chamber. The speaker assembly includes a first limit structure, and one end of the insertion plate is inserted in the first limit structure for forming a sound absorbing chamber filled with sound absorbing material. The insertion plate includes a first part from the first limit structure and a second part. The speaker assembly is equipped with an insertion plate to enlarge the area of the sound absorption channel and further to improve the performance of the speaker assembly.
    Type: Grant
    Filed: July 28, 2019
    Date of Patent: June 2, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Zhichen Chen, Jianwei Chen
  • Patent number: 10638232
    Abstract: An electro-acoustic driver includes a diaphragm formed of a compliant material, a bobbin configured to hold a winding of an electrical conductor and a housing having a housing axis that is substantially coaxial with the bobbin. The diaphragm is fixed to one end of the housing and has a substantially planar shape when the diaphragm is at rest. A stiffening element is fixed to an inner region of a surface of the diaphragm. A motion of the bobbin along a bobbin axis generates a movement of the inner region of the diaphragm to thereby generate an acoustic signal that propagates from the diaphragm.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: April 28, 2020
    Assignee: BOSE CORPORATION
    Inventors: Adam Sears, Christopher A. Pare, Brock N. Jacobites, Andrew D. Munro, Thomas Landemaine, Nicholas John Joseph, Marek Kawka, Prateek Nath
  • Patent number: 10595130
    Abstract: A speaker includes spacers that are disposed between a front end portion of a top yoke, which serves as a first member, and a back end portion of a back portion of a frame, which serves as a second member, to form a gap that defines an air passage. When a bobbin and a vibrating plate vibrate in a front-back direction, an airflow through the air passage, which faces a voice coil, is formed between the space around a magnetic gap and the outside. Accordingly, the voice coil is cooled over the entire circumference thereof.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: March 17, 2020
    Assignee: ALPINE ELECTRONICS, INC.
    Inventor: Kei Tanabe
  • Patent number: 10524056
    Abstract: A loudspeaker magnetic circuit system includes an iron a magnetic steel, a spring washer, a voice coil and a U-shaped short-circuit ring. The U-shaped short-circuit ring includes a first ring body and a second ring body, and the voice coil is positioned and movable up and down in a U-shaped groove formed by the first ring body and the second ring body. Through making the short-circuit ring into a U-shaped structure and optimizing the connection relationship between the short-circuit ring and other components such as the spring washer, magnetic steel and iron, the present invention can effectively reduce the harmonic distortion and non-linear distortion of the loudspeaker and improve the overall acoustic performance of the speaker such that the sound quality of loudspeaker is improved.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: December 31, 2019
    Assignee: Tymphany Acoustic Technology (Huizhou) Co., Ltd.
    Inventor: Zhi Chen
  • Patent number: 10499140
    Abstract: An apparatus includes a horn bracket, a magnet system and a vibration system, where the horn bracket includes a through hole configured for positioning the magnet system, the magnet system includes an inner magnetic ring and an outer magnetic ring sleeved on an exterior of the inner magnetic ring, the inner magnetic ring is coaxial with the outer magnetic ring, a gap is provided between an inner annular surface of the outer magnetic ring and an outer annular surface of the inner magnetic ring, where the inner annular surface and the outer annular surface have opposite magnetic polarities, magnetic flux lines formed in the gap by the outer magnetic ring and the inner magnetic ring are radially disposed, the vibration system includes a voice diaphragm, a voice coil having one end coupled to the voice diaphragm, and a winding coupled to the other end of the voice coil.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: December 3, 2019
    Assignee: SHENZHEN GRADSUN ELECTRONIC CO., LTD.
    Inventors: Weiyong Gong, Haiquan Wu, Ruiwen Shi
  • Patent number: 10492005
    Abstract: A speaker includes a multi-magnet structure including at least an inner magnet and an outer magnet. A voice coil is suspended from a membrane into a gap between the inner magnet and the outer magnet, and a spider is attached to the membrane and suspended at least partially by the inner magnet. The spider is configured to stabilize the membrane throughout a range of movement responsive to a force generated by the voice coil and the multi-magnet structure.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: November 26, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Christian Lorenz, Christopher Michael Forrester
  • Patent number: 10413939
    Abstract: An electronic vibrator comprises a power source unit converting AC power into DC power, a bridge circuit comprising an insulated-gate bipolar transistor (IGBT) as a power switching device for driving a large-capacity oscillator, a circuit driving unit driving the bridge circuit and applying a sine wave which is a sine wave PWM modulation reference wave as well as a triangular wave, and a vibration generator connected to the bridge circuit, generating vibration by a current supplied by the bridge circuit.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 17, 2019
    Inventor: Dong Jun Ahn
  • Patent number: 10332718
    Abstract: A particle beam device including a magnet, the device including: a particle beam source configured to emit electron and ion beams; a plurality of yokes arranged in a substantially rectangular shape; a coil set including a plurality of coils, wherein windings of the plurality of coils are uniformly distributed across and wound around the plurality of yokes, wherein the coil set is configured to produce both dipole and quadrupole fields, wherein the magnet is configured to deflect and focus electron and ion beams.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: June 25, 2019
    Assignee: IMATREX, INC.
    Inventors: Roy E. Rand, Vitaliy Ziskin
  • Patent number: 10310567
    Abstract: An acoustic device includes a waterproof vibrating membrane and a magnetic component disposed below the waterproof vibrating membrane. The waterproof vibrating membrane includes a convex portion which protrudes toward a position of the magnetic component, or a concave portion which is recessed opposing to a position of the magnetic component. The magnetic component includes a concave pressure buffering portion corresponding to a shape of the convex portion of the waterproof vibrating membrane wherein the concave pressure buffering portion is recessed toward a side opposing to a side on which the waterproof vibrating membrane is located, or a convex pressure buffering portion corresponding to a shape of the concave portion of the waterproof vibrating membrane wherein the convex pressure buffering portion protrudes toward a side on which the waterproof vibrating membrane is located.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: June 4, 2019
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Kazunori Kita, Keiichi Imamura
  • Patent number: 10244329
    Abstract: A receiver is provided comprising an outside housing, and a magnetic circuit system and a vibration system accommodated in the outside housing. The vibration system comprises a vibration diaphragm and a voice coil. The outside housing comprises a first housing and a second housing matching with each other. The first housing and the second housing are provided with electrical connection structures conductive to one another thereon. The first housing is provided with a first elastic piece on a sidewall thereof. One end of the first elastic piece is welded with a spring electrically connected to an external circuit, and the other end is exposed at the outside of the sidewall of the first housing. The second housing is provided with a second elastic piece on a sidewall thereof.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: March 26, 2019
    Assignee: GoeItek Inc.
    Inventors: Linjin Mao, Gang Chen
  • Patent number: 10225646
    Abstract: A speaker box includes a housing with an accommodating space and a housing wall; a propping wall extending from the housing wall toward the accommodating space; and a speaker unit located between the housing wall and the propping wall for dividing the accommodating space into a front cavity and a back cavity. The speaker unit includes a diaphragm located in the front cavity for forming a front sound cavity cooperatively with the housing, a sound guiding channel communicating the front sound cavity with outside, and a through hole penetrating the propping wall and communicating the sound guiding channel with the back cavity. The speaker box further includes an elastic cover plate covering the through hole completely for absorbing vibration energy at a specific frequency. The Young's modulus or strength of the elastic cover plate is smaller than that of the propping wall.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: March 5, 2019
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Peng Qin, Shengrong Shi, Zhe Zhang
  • Patent number: 10178467
    Abstract: A speaker module relates to the technical field of electroacoustic products, and comprises a lower module casing, an upper module casing and a steel sheet which are successively combined together. A speaker monomer is contained in a space enclosed by the lower module casing, the upper module casing and the steel sheet. The speaker monomer, the upper module casing and the steel sheet together enclose a front sound cavity of the module. The front sound cavity is in communication with a sound outlet hole of the module, and the sound outlet hole is located on a side part of the speaker monomer. A sheet is adhered inside the steel sheet, the thickness of the sheet being about 0.1 mm˜0.2 mm and the material of the sheet being a soundproof material.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: January 8, 2019
    Assignee: Goertek Inc.
    Inventors: Jincai Hou, Mingjie Zhong
  • Patent number: 10111007
    Abstract: Acoustic conversion efficiency is improved and a stable signal reproduction operation is ensured. Provided is a speaker device including: a magnet; a yoke attached to the magnet and at least one sub-plate that is separated from the main plate in an axial direction of the central axis; a coil bobbin formed in a tubular shape and changeable in the axial direction; a voice coil wound around an outer circumferential surface of the coil bobbin, at least a portion of the voice coil being disposed in a main magnetic gap formed between the main plate and the yoke; a vibration plate having an inner circumferential portion connected to the coil bobbin; and a magnetic fluid filling at least one sub-magnetic gap formed between the sub-plate and the yoke, wherein a through-hole positioned in the sub-magnetic gap filled with the magnetic fluid is formed in the coil bobbin.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: October 23, 2018
    Assignee: Sony Corporation
    Inventors: Takahisa Tagami, Emiko Ikeda, Naoya Kunikata
  • Patent number: 10063953
    Abstract: An integrated speaker and lamp assembly includes a speaker diaphragm and a light source directing light through the speaker diaphragm. A related method of integrating a speaker and a lamp is also disclosed.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 28, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Matthew Anthony Majkowski
  • Patent number: 9998835
    Abstract: Embodiments are provided for components configured for audio playback. According to certain aspects, a transducer includes dual voice coils disposed in a magnet section, whereby the magnet section generates an electromagnetic field that causes the dual voice coils to actuate in response to an applied audio signal. The transducer further includes a diaphragm coupled to the dual voice coils that actuates according to the dual voice coils and produces audio output. In some implementations, the transducer may be disposed within a cutout area of an electronic device, whereby the transducer is secured to the electronic device via a roll-surround suspension.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: June 12, 2018
    Assignee: GOOGLE LLC
    Inventors: Michael J. Daley, Timothy Whitwell
  • Patent number: 9924274
    Abstract: An inertial electroacoustic transducer unit has a first exciter and a second exciter, the second exciter is disposed in overturned position on the first exciter. In a first configuration, the bases of the two cups face each other, or in a second configuration the cavities of the two cups face each other. The two exciters are fixed together or to a plane intended to be put into vibration in such manner that the axes of the cylindrical supports of the coils coincide. The ends of the coils of the two exciters are connected in counter-phase in such manner to obtain a consistent movement in the same direction as the magnetic units of the two exciters.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: March 20, 2018
    Assignee: ASK INDUSTRIES SOCIETA' PER AZIONI
    Inventors: Carlo Sancisi, Marco Fava
  • Patent number: 9900702
    Abstract: A speaker is provided in the present disclosure. The speaker includes a magnetic circuit system for providing magnetic field, a diaphragm, a suspension, a drive mechanism and a horizontal former, which is retained on the surface of the diaphragm directly facing the magnetic circuit system. The diaphragm is suspended above the magnetic circuit system for generating sound by vibrating. The suspension is used to suspend the diaphragm above the magnetic circuit system. The drive mechanism is disposed under the diaphragm and can interact with the magnetic circuit system so as to drive the diaphragm to vibrate in order to generate sound. The horizontal former is retained on the surface of the diaphragm directly facing the magnetic circuit system, wherein the horizontal former is provided with a communication space which communicates the space under the diaphragm and the space under the suspension.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: February 20, 2018
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Jing Ma, Long Zhang
  • Patent number: 9820053
    Abstract: Acoustic conversion efficiency is improved and a stable signal reproduction operation is ensured. Provided is a speaker device including: a magnet; a yoke attached to the magnet and at least one sub-plate that is separated from the main plate in an axial direction of the central axis; a coil bobbin formed in a tubular shape and changeable in the axial direction; a voice coil wound around an outer circumferential surface of the coil bobbin, at least a portion of the voice coil being disposed in a main magnetic gap formed between the main plate and the yoke; a vibration plate having an inner circumferential portion connected to the coil bobbin; and a magnetic fluid filling at least one sub-magnetic gap formed between the sub-plate and the yoke, wherein a through-hole positioned in the sub-magnetic gap filled with the magnetic fluid is formed in the coil bobbin.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: November 14, 2017
    Assignee: Sony Corporation
    Inventors: Takahisa Tagami, Emiko Ikeda, Naoya Kunikata
  • Patent number: 9807509
    Abstract: A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system received in the shell. The vibrating system includes a membrane module and a coil assembly connecting to the membrane module for driving the membrane module to vibrate. The magnetic system includes a first magnet module and a second magnet module. The first magnet module and the second magnet module are opposite to each other to form a magnetic gap, and the coil assembly is arranged in the magnetic gap. The coil assembly includes a coil and a coil support for supporting the coil. The first magnet module includes a pair of first grooves formed at two opposite edges thereof, the first grooves are adjacent to the membrane module and face the coil assembly.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 31, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Lubin Mao, Hongxing Wang, Jiwei Ge
  • Patent number: 9769571
    Abstract: A loudspeaker includes two first magnetic portions arranged in parallel and a second magnetic portion disposed between the two first magnetic portions on a bottom plate. An annular top plate is provided to the two first magnetic portions and disposed in such a manner as to form a magnetic gap with respect to the second magnetic portion. The first magnetic portions and the second magnetic portion are magnetized in the opposite directions in a direction in which the bottom plate, the first magnetic portions and the top plate are stacked. The top plate includes two main bodies provided to the two first magnetic portions and two bending portions connecting between two first magnetic portions and bending toward the bottom plate.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: September 19, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Asano, Mitsutaka Enomoto, Tomoyuki Matsunaga
  • Patent number: 9765959
    Abstract: A speaker including a speaker apparatus and a lighting apparatus are provided. The speaker having a conical vibration portion, and a lighting apparatus insertedly disposed at a center of the conical vibration portion to emit light to the conical vibration portion, so that efficient lighting is ensured and light is adjusted depending on the acoustic signal, thereby maximizing the visual sound effect.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hong Kyun Yim, Sung Jin Ann, Sin Wi Moon, Eun Lee, Yu Li Sung, Young Soo Hong
  • Patent number: 9718671
    Abstract: A micro electro-mechanical system (MEMS) acoustic sensor is disclosed. The acoustic sensor comprises a backplate and a diaphragm. The acoustic sensor further comprises a flexible member and optional spacer member disposed between the backplate and the diaphragm resulting in a gap between the backplate and the diaphragm. The gap can vary in response to impinging pressure on the diaphragm based on the design of the flexible member and resulting in a variable capacitance between the backplate and the diaphragm. The change in the gap can result in a change in an electrical characteristic associated with the variable capacitance and can be converted to an electrical output signal corresponding to the impinging pressure on the diaphragm. The flexible member can be part of the backplate or diaphragm.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: August 1, 2017
    Assignee: INVENSENSE, INC.
    Inventors: Sushil Bharatan, Baris Cagdaser
  • Patent number: 9706311
    Abstract: A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system. The shell includes a cover and a frame assembled with the cover for forming a receiving cavity. The magnetic system is received in the receiving cavity for providing a magnetic gap. The vibrating system includes a diaphragm and a coil module suspended in magnetic gap, the coil module is connected to the diaphragm for driving the diaphragm to vibrate, the diaphragm includes a main body, a periphery surrounding the main body and a connecting part extending outwards from the periphery. The main body is non-coplanar with the connecting part.
    Type: Grant
    Filed: March 26, 2016
    Date of Patent: July 11, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: LuBin Mao, HongXing Wang
  • Patent number: 9686614
    Abstract: An electro-acoustic device is provided, including a frame; a magnetic circuit received in the frame and including a lower plate fixed on a bottom of the frame and a magnet attached on the lower plate; a vibration system received in the frame and including a vibrating diaphragm attached to a top of the frame; a cavity formed cooperatively by the lower plate, the frame and the vibrating diaphragm; a leak hole provided between the frame and the lower plate for communicating with outside of the electro-acoustic device; and a damper attached to the lower plate and located inside of the electro-acoustic device for covering the leak hole internally.
    Type: Grant
    Filed: January 24, 2016
    Date of Patent: June 20, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Yiming Meng, Wei Pang, Yunxia Xu, Xiaojiang Gu
  • Patent number: 9661420
    Abstract: An electromechanical transducer including a magnetic circuit having a magnet configured to generate a magnetic field and a magnetic gap into which a voice coil associated with a diaphragm is at least partially inserted, the magnetic field having a primary flux component and a secondary flux component. The transducer further including a housing positioned around the magnetic circuit, the housing having an acoustic spout whose sound outlet opening is positioned outside of a portion of the magnetic field that is dominated by the primary flux component. A transducer including an enclosure having a top wall, a bottom wall, at least one side wall connecting the top wall to the bottom wall and an acoustic spout extending from the top wall or the bottom wall, a diaphragm, a voice coil and a magnet assembly having a ring magnet and a gap within which the voice coil is positioned.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 23, 2017
    Assignee: Apple Inc.
    Inventors: Scott P. Porter, Ruchir M. Dave, Christopher R. Wilk