Magnetic Circuit Patents (Class 381/412)
  • Patent number: 12289590
    Abstract: The present invention provides a coaxial speaker including a support ring, a magnetic circuit system, a first vibration system and a second vibration system fixed on both side of the support ring and arranged coaxially. The first vibration system includes a first diaphragm and a first voice coil. The second vibration system includes a second diaphragm and a second voice coil. The magnetic circuit system includes a first magnetic gap and a second magnetic gap. The first diaphragm is used for generating treble sound, the second diaphragm is used for generating bass sound. The second vibration system includes a support voice coil sandwiched between the second diaphragm and second voice coil. Bass sound and treble sound of the coaxial speaker form a full-range speaker, providing high-quality sound. The support voice coil can flexibly adjust the height and the position of the second voice coil according to requirements.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: April 29, 2025
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Zhang Ren, Zhiwei Zhong
  • Patent number: 12284506
    Abstract: The present disclosure provides a sounding device. The sounding device includes a vibration system, a magnetic circuit system, a conductive element and a fixed element. The vibration system includes a diaphragm and a voice coil fixed to the diaphragm. The sounding device further includes a reinforcement element having a first reinforcement part fixed to the upper surface of the connection part or the lower surface of the connection part, a second reinforcement part fixed to the outer side surface of the voice coil, and a third reinforcement part fixed with the upper surface of the voice coil. Compared with the related art, the sounding device provided by the present disclosure has a simple structure and good reliability.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: April 22, 2025
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Huhu Yang, Wei Wei, Zhaoyu Yin, Zhizhu Chen
  • Patent number: 12238498
    Abstract: The present disclosure relates to a magnetic circuit assembly of a bone conduction speaker. The magnetic circuit assembly may generate a first magnetic field. The magnetic circuit assembly may include a first magnetic element, and the first magnetic element may generate a second magnetic field. The magnetic circuit may further include a first magnetic guide element and at least one second magnetic element. The at least one second magnetic element may be configured to surround the first magnetic element and a magnetic gap may be configured between the second magnetic element and the first magnetic element. A magnetic field strength of the first magnetic field within the magnetic gap may exceed a magnetic field strength of the second magnetic field within the magnetic gap.
    Type: Grant
    Filed: August 18, 2023
    Date of Patent: February 25, 2025
    Assignee: SHENZHEN SHOKZ CO., LTD.
    Inventors: Lei Zhang, Fengyun Liao, Xin Qi
  • Patent number: 12200157
    Abstract: A mobile terminal includes a housing and a speaker component including a speaker unit that divides a cavity of the speaker component into a front speaker box and a rear speaker box, an air vent coupled to an inner cavity of the housing is disposed on a wall of the rear speaker box, and a flexible sound absorbing member that can absorb a sound and damp vibration is disposed on a wall of the inner cavity of the housing.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: January 14, 2025
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shizhe Li, Jing Chang, Yang Liu, Tienan Zhang
  • Patent number: 12192727
    Abstract: The present invention provides a multifunctional acoustic device includes a cover enclosing an accommodating cavity and an acoustic member. The cover has a sound hole. The acoustic member includes a housing, a vibration system having a diaphragm, and a magnetic circuit system driving the diaphragm. The diaphragm divides a space of the housing into a front acoustic cavity and a rear acoustic cavity. The multifunctional acoustic device includes a sound channel communicating the sound hole with the front acoustic cavity and a sealing element located between the sound hole and the sound channel. The sealing element is arranged on a peripheral side of the sound channel so that the acoustic member communicates with an outside only through the sound channel.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: January 7, 2025
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Xin Jin, Fan Zhang, Ronglin Linghu, Bo Xiao, Wei Song
  • Patent number: 12185074
    Abstract: The present disclosure provides a sounding device. The sounding device includes a vibration system, a magnetic circuit system, a conductive element and a fixed element. The vibration system includes a diaphragm and a voice coil fixed to the diaphragm. The diaphragm consists of a dome part and a suspension around the dome part. The dome part includes a dome body and a protruded platform of the dome extending from the dome body to the voice coil and fixed to the voice coil. The dome part also includes dome reinforcement elements. Compared with the related art, the sounding device provided by the present disclosure has a simple structure and good reliability.
    Type: Grant
    Filed: January 11, 2023
    Date of Patent: December 31, 2024
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Huhu Yang, Wei Wei, Zhaoyu Yin, Zhizhu Chen
  • Patent number: 12160717
    Abstract: Disclosed are a vibration sound device for an electronic product and the electronic product. The vibration sound device comprises a first housing, a magnetic assembly, a coil assembly and a second housing. The first housing includes a cavity and is opened at one side thereof. An interaction force is generated between the magnetic assembly in the first housing and the coil assembly on the second housing to drive the vibration sound device to vibrate so as to generate a sound. According to the present disclosure, the magnetic assembly and the coil assembly are configured in a sandwiched structure, so that the overall height of the vibration sound device is reduced, and thus space utilization of the electronic device is improved.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 3, 2024
    Assignee: GOERTEK INC.
    Inventors: Yueguang Zhu, Dongsheng Mao, Dezhang Shi, Yongqiang Wang
  • Patent number: 12160719
    Abstract: A coaxial speaker includes a first sounding unit, a second sounding unit coaxial with and surrounded by the first sounding unit, and a magnetic circuit system including a bottom plate, a first magnetic unit and a second magnetic unit spaced apart from the first magnetic unit for forming a first magnetic gap for the first sounding unit. The second magnetic unit includes a second magnet in an annular shape, a second yoke in an annular shape attached to the second magnet, and a third magnet in an annular shape attached to the second yoke. The bottom plate is provided with a bending wall locating inside the second magnetic unit, the bending wall is spaced apart from the second magnetic unit for forming a second magnetic gap for the second sounding unit. The coaxial speaker can reduce a product height and a magnetic circuit system cost.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: December 3, 2024
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Zhang Ren, Qi Wang, Zhiwei Zhong
  • Patent number: 12149908
    Abstract: The present disclosure discloses a sound device includes a frame, a magnet system, and a first vibration system and a second vibration system arranged on two sides of a magnet system. The magnet system includes a first central yoke, a central magnet mounted on the first central yoke, a side yoke surrounding the central magnet and fixed to the frame, and a connection portion connecting the first central yoke and the side yoke. The side yoke includes a first side yoke fixed to the frame and a second side yoke bending and extending from an edge of the first side yoke towards the central magnet; the connection portion connects the first central yoke and the second side yoke. The sound device in the present disclosure has higher magnetic ability and miniaturization ability.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: November 19, 2024
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Xuedong Lv, Xiaoqiong Feng, Kun Yang, Zhen Huang, Yi Shao
  • Patent number: 12133059
    Abstract: A thin loudspeaker is provided. The thin loudspeaker includes a small magnet and a thin coil diaphragm. The coil diaphragm has a plurality of planar coils and a membrane. The membrane has a plurality of laminated substrates. The planar coils are interconnected, stacked, and respectively formed on the substrates. The magnet is disposed to contact the underside of the coil diaphragm along the common central axis of the planar coils.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: October 29, 2024
    Assignee: NATIONAL CENTRAL UNIVERSITY
    Inventors: Po-Lei Lee, Kuo-Kai Shyu
  • Patent number: 12101616
    Abstract: A speaker includes: a frame, a vibration system including a diaphragm, a voice coil, and a flexible circuit board, and a magnetic circuit system, wherein the flexible circuit board includes an outer fixing portion, an inner fixing portion, and an elastic connecting arm, the inner fixing portion includes a first fixing portion electrically connected with the elastic connecting arm, a second fixing portion bent and extended from the first fixing portion in a direction away from the diaphragm, and a third fixing portion bent and extended from an end of the second fixing portion away from the first fixing portion in a direction of the voice coil, the third fixing portion is provided with a pad which is electrically connected with a bottom surface of the voice coil. Compared with the related art, the speaker disclosed by the present disclosure has better acoustic performance.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: September 24, 2024
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Huhu Yang, Wei Wei, Zhaoyu Yin, Zhizhu Chen
  • Patent number: 12088996
    Abstract: Disclosed is a multifunctional sounding device which combines functions of emitting sounds and providing vibrations and includes a housing; a speaker unit including a vibration assembly vibrating along a first direction and a magnetic assembly including a main magnet and an auxiliary magnet; an elastic member suspending the speaker unit in the housing; a flexible sealing membrane assembly connected between the housing and the speaker unit including an outer ring, an inner ring, and a flexible sealing membrane connected between the two rings; and a driving coil driving the speaker unit for vibrating in a second direction including two sides respectively facing the main magnet and the auxiliary magnet in the first direction. The two directions are perpendicular. The outer ring, the flexible sealing membrane and the inner ring are integrally formed, thereby achieving a high structural consistency and avoiding glue width requirements so as to release spaces.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: September 10, 2024
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Xin Jin, Fan Zhang, Bo Xiao, Ronglin Linghu, Wei Song
  • Patent number: 12052540
    Abstract: The present invention provides a speaker box including a housing body with a containment space and a sounding unit. The housing body includes a sound aperture. The sounding unit includes a vibration system with a vibration diaphragm and a magnetic circuit system. The vibration diaphragm divides the containment space into front cavity and rear cavity. The speaker box includes a breathable separator located in the rear cavity to form a sound absorbing cavity. The lower housing includes a bottom wall and a side wall bent and extended from the bottom wall. The breathable separator includes a fixed part fixed to the upper housing, a breathable part having several air circulation holes, and a sealed part extending from the breathable part and sealing the through hole. The speaker box of the present invention effectively reduces the height of the product and reduces the cost.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: July 30, 2024
    Assignee: AAC MICROTECH (CHANGZHOU) CO., LTD.
    Inventors: Xin Jin, Fan Zhang, Zhang Ren, Ronglin Linghu, Wei Song
  • Patent number: 12022273
    Abstract: The present disclosure discloses a vibration suspension system for a transducer, which comprises at least one movable device provided with a magnetic conductive material, at least a part of the magnetic conductive material being arranged in an area where an alternating magnetic field overlaps with a static magnetic field, so that the static magnetic field and the alternating magnetic field are converged, and a magnetic field force generated by the interaction between the static magnetic field and the alternating magnetic field being applied to the magnetic conductive material, so as to drive the vibration suspension system to move; and at least one suspension device comprising an elastic recovery device for providing a restoring force for a reciprocal vibration of the vibration suspension system, one end of the elastic recovery device being fix to the movable device and the other end thereof being fixed to the inside of the transducer.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: June 25, 2024
    Assignee: GOERTEK INC.
    Inventors: Chunfa Liu, Fenglei Zu, Xinfeng Yang
  • Patent number: 11968513
    Abstract: The application discloses a vibration sounding device including a housing body with a containment cavity, a sounding unit placed in the containment cavity, a weight, a drive coil and a spring plate. The spring plate includes a first fixed section for fixed connection with the weight and a second fixed section for fixed connection with the housing body. The first fixed section and the second fixed section are fixed by laser spot welding. Compared with the prior art, the first fixed section and the second fixed section are fixed by laser spot welding, which can improve the bonding strength between the first fixed section and the second fixed section, and ensures the strength of the spring plate when the vibration sounding device is working.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: April 23, 2024
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Bo Xiao, Chenliang Kong, Tong Zhang, Ronglin Linghu
  • Patent number: 11950074
    Abstract: The present invention provides a speaker including: a frame, a vibration system and a magnetic circuit system. The vibration system includes a vibration diaphragm and a voice coil. The magnetic circuit system includes a magnetic part, and the voice coil is arranged around the magnetic part. The vibration system further includes an elastic plate with two branch elastic plates. The branch elastic plate includes a connection part, an extension part, an elastic arm and a fixed part. The surfaces of the connection part and the extension part facing the connection surface are recessed together to form a welding slot, and the lead wire is accommodated in the welding slot. The speaker provided by the present invention can not only effectively prevent the voice coil from swaying, but also reduce the number of parts to simplify the product structure.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: April 2, 2024
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Keyong Zhou, Yuanxiang Mao
  • Patent number: 11937062
    Abstract: Embodiments of this application disclose an electroacoustic transducer, including a center magnet, two first side magnets, two second side magnets, a voice coil, a voice diaphragm, and two flexible printed circuit boards. The two first side magnets are symmetrically arranged on two sides of the center magnet, and a first gap is formed between the first side magnet and the center magnet. One end of the voice coil is partially located in the first gap, and the voice diaphragm is fixedly connected to the other end of the voice coil. The two flexible printed circuit boards are symmetrically arranged on two sides of the center magnet. The electroacoustic transducer has comparatively high magnetic induction strength and comparatively high sensitivity.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: March 19, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Jinhua Liu
  • Patent number: 11818541
    Abstract: A microelectromechanical system (MEMS) transducer includes a transducer substrate, a diaphragm, and a stiffening member. A first side of the diaphragm is coupled to the transducer substrate. A second side of the diaphragm is coupled to the stiffening member. The stiffening member includes a plurality of fingers extending inwards from a perimeter of an aperture defined by the transducer substrate.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: November 14, 2023
    Assignee: KNOWLES ELECTRONICS, LLC
    Inventor: Peter V. Loeppert
  • Patent number: 11785392
    Abstract: A transducer assembly comprising: a magnet motor assembly comprising a first magnet plate and a second magnet plate arranged along an axis, a first support plate positioned between inward facing surfaces of the first magnet plate and the second magnet plate, a second support plate positioned along an outward facing surface of the first magnet plate to form a first magnetic gap between the first support plate and the second support plate, and a third support plate positioned along an outward facing surface of the second magnet plate to form a second magnetic gap between the first support plate and the third support plate; a voice coil coupled to the magnet motor assembly, wherein the voice coil is positioned around the first support plate and within the first magnetic gap and the second magnetic gap; and a piston coupled to the voice coil, wherein the piston is operable to vibrate in a direction parallel to the axis.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: October 10, 2023
    Assignee: Apple Inc.
    Inventors: Rebecca J. Mikolajczyk, Onur I. Ilkorur, David S. Wilkes, Jr., Christopher Wilk, Michael J. Newman
  • Patent number: 11765513
    Abstract: The present disclosure provides a dual magnetic circuits structure and a sound device, the dual magnetic circuits structure includes a shell and an inner magnetic assembly, the shell is made of a magnetically permeable material, the inner magnetic assembly is arranged in the shell and includes a first inner magnetic element and a second inner magnetic element, a first magnetic gap, a second magnetic gap, an outer diameter of the second inner magnetic element is greater than that of the first inner magnetic element. Therefore, compared to the existing dual magnetic circuits structure, the dual magnetic circuits structure provided by the present invention has the advantage that the thickness of the whole dual magnetic path structure can be effectively reduced while ensuring that the vibration spaces and winding heights of the first voice coil and the second voice coil are not changed.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: September 19, 2023
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventor: Jiujian Liu
  • Patent number: 11765512
    Abstract: The present invention provides an acoustic device including a frame, a magnetic circuit system and a vibration system. The magnetic circuit system includes a lower plate and a magnet assembly having a magnetic gap. The vibration system includes a diaphragm and a voice coil at least partially located in the magnetic gap. The frame includes a lower cover and a frame side wall. The vibration system is supported on the frame side wall. The lower plate includes a plate body spaced apart from the lower cover and a support wall bending and extending from the plate body toward the lower cover. The magnet assembly is supported and fixed on a surface of the plate body distal to the lower cover. The support wall abuts against and is fixed on the lower cover.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: September 19, 2023
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Zhang Ren, Zhiwei Zhong
  • Patent number: 11665478
    Abstract: An acoustic diaphragm 1 according to the present invention includes a center dome member, and a sub dome member. The center dome member includes a center dome 2 and an annular first plane part 2a that is disposed along the outer periphery of the center dome and formed integrally with the center dome. The sub dome member includes a sub dome 3 and an annular second plane part 3a that is disposed along the inner periphery of the sub dome and formed integrally with the sub dome. The first plane part includes a rising part 2b of the center dome, a first front surface, and a first back surface. The second plane part includes an inner peripheral edge 3b, a second front surface, and a second back surface. The center dome is formed of a material different from that of the sub dome. The sub dome surrounds the periphery of the center dome. The inner peripheral edge coincides with the rising part. The first front surface is joined to the second back surface.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: May 30, 2023
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventor: Hiromichi Ozawa
  • Patent number: 11665471
    Abstract: The present disclosure discloses a sounding device including a frame, a vibration system, a magnetic circuit system, and an air-permeable mesh in a ring shape. The vibration system includes a diaphragm and a voice coil. The magnetic circuit system includes a yoke, a first magnet, and a second magnet in a ring shape around and spaced apart from the first magnet for forming a magnetic gap. One end of the air-permeable mesh is fixed to the second magnet, and another end of the air-permeable mesh is fixed to the frame. A rear cavity is formed jointly by the frame, the yoke, the second magnet and the air-permeable mesh. Compared with the related art, the sounding device disclosed by the present disclosure has a better low-frequency acoustic performance.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: May 30, 2023
    Assignees: AAC Microtech (Changzhou) Co., Ltd., AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Zhang Ren, Zhiwei Zhong
  • Patent number: 11659334
    Abstract: The present invention provides an acoustic device including a frame, a magnetic circuit system, and a vibration system. The vibration system includes a diaphragm, a voice coil, and a support. The diaphragm includes a dome, a first suspension, and a second suspension. The diaphragm includes a first fixation portion, and the dome includes a dome body and a first dome extending wall bending and extending from the dome body, the first fixation portion connected to and wrapping the first dome extending wall.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: May 23, 2023
    Assignee: AAC Microtech (Changzhou) Co, , Ltd.
    Inventors: Zhang Ren, Zhiwei Zhong
  • Patent number: 11638098
    Abstract: The present application discloses a screen sounding system having a screen, an exciter for driving the screen, and a magnetic element fixedly connected with the screen. The exciter includes a housing with an accommodation space and a magnet arranged in the accommodation space. The housing is fixed on the magnetic element through magnetic attraction force between the magnet and the magnetic element. Compared with the related art, the screen sounding system disclosed by the present application facilitates removal and installation of the exciter. The position of the exciter can be adjusted through slip. Meanwhile, the magnetic element can avoid an influence on the screen caused by a magnetic field of the exciter.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: April 25, 2023
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Xudong Yan, Hao Gu, Wei Liu, Pengfei Zhang
  • Patent number: 11632609
    Abstract: A thin double-sided vibrating speaker includes a magnet member, a first vibration assembly and a second vibration assembly; the magnet member includes a main magnetic plate, a first magnetic path unit, a second magnetic path unit and side magnetic path units, the first magnetic path unit is disposed on one surface of the main magnetic plate, the second magnetic path unit is disposed on another surface of the main magnetic plate, the side magnetic path units are disposed on the main magnetic plate and correspond to two sides of the first magnetic path unit, the first vibration assembly is disposed on one surface of the magnet member, and the second vibration assembly is disposed on another surface of the magnet member. Accordingly, in addition to achieving the requirement of thinning, the thin double-sided vibrating speaker of the present disclosure also has the effect of vibration reduction and two-way sounding.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: April 18, 2023
    Assignee: FORTUNE GRAND TECHNOLOGY INC.
    Inventors: Ping-Yu Lee, Jian Lv, Yi-Yong Li, Zan-Hua Liu, Chun-Yan Zhang
  • Patent number: 11617040
    Abstract: Provided is a vibration system, a sounding device and an electronic device. The vibration system includes a voice membrane, a voice coil configured to drive the voice membrane to vibrate, and a holder having a pad. The voice membrane includes a dome and a first diaphragm arranged around the dome. The dome and the first diaphragm are fixed to the holder. The voice coil is connected to the pad through a lead wire. The dome includes a first end close to the pad and a second end away from the pad and opposite to the first end. The second end has a positioning portion. The holder has a sink configured to receive the positioning portion. The dome is positioned with the holder through engagement of the sink with the positioning portion. Good symmetry of assembly is provided between the holder and the dome in the related art.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: March 28, 2023
    Assignee: AAC Microtech (Changzhou) Co., Ltd.
    Inventors: Weiwei Tao, Xin Jin
  • 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: 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: 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: 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: 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: 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: 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