EP4333457A1 - Nouveau haut-parleur structuré à diaphragme en forme de dôme - Google Patents

Nouveau haut-parleur structuré à diaphragme en forme de dôme Download PDF

Info

Publication number
EP4333457A1
EP4333457A1 EP22275118.2A EP22275118A EP4333457A1 EP 4333457 A1 EP4333457 A1 EP 4333457A1 EP 22275118 A EP22275118 A EP 22275118A EP 4333457 A1 EP4333457 A1 EP 4333457A1
Authority
EP
European Patent Office
Prior art keywords
dome
harmonic eliminator
diaphragm
shaped diaphragm
magnetic circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22275118.2A
Other languages
German (de)
English (en)
Inventor
Daniel Emonts
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAM Sas
Original Assignee
RAM Sas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RAM Sas filed Critical RAM Sas
Priority to EP22275118.2A priority Critical patent/EP4333457A1/fr
Publication of EP4333457A1 publication Critical patent/EP4333457A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the technical field of loudspeaker products, in particular to a spherical-top diaphragm loudspeaker with a novel structure.
  • the loudspeakers currently on the market generate harmful sound waves that interfere with the sound quality when the top diaphragm emits sound, such as harmful sound waves.
  • the traditional solution is usually to install a sound-absorbing foam in the back cavity of the top diaphragm. Although the sound-absorbing foam will absorb some harmful sound waves, the sound-absorbing foam will absorb all frequencies of sound, resulting in speaker distortion from time to time and affecting the sound quality.
  • the purpose of the utility model is to overcome the deficiencies of the prior art and provide a spherical-top diaphragm loudspeaker with a novel structure.
  • the dome-shaped diaphragm speaker of the novel structure comprises: A magnetic circuit assembly, a front plate mounted on one (top) side of the magnetic circuit assembly, a top dome-shaped diaphragm protruding from the middle of the front plate, which is being fixed between the front plate and the magnetic circuit assembly.
  • a harmonic eliminator used to eliminate harmful soundwaves or resonances is being placed between the magnetic circuit assembly and the top diaphragm.
  • One end of the harmonic eliminator is installed in the middle of the magnetic circuit assembly, and the other (top) end of the harmonic eliminator extends to the inner side of the top diaphragm.
  • the harmonic eliminator is designed with a structured concave-convex sound absorbing surface to eliminate standing waves and deviate harmful sound waves, thereby acoustic distortions.
  • harmful sound waves are generated behind the top diaphragm
  • the concave and convex-shaped surfaces on the harmonic eliminator cancel out the harmful sound waves and the remaining ones are guided and then below the harmonic eliminator, so that the harmful sound waves behind the top diaphragm will not be reflected top diaphragm.
  • the harmful sound waves mainly refer to standing waves.
  • the concave-convex sound-absorbing surface of the harmonic eliminator includes a plurality of equal parts centred around the 1st positioning tip of some trapezoidal ribs that spreads out in a wave-like shape and a plurality of inclined surfaces that are centred around the 1st positioning tip and are equally distributed in a fan blade shape and divide the trapezoidal ribs into equal parts.
  • the magnetic circuit assembly comprises a magnet and is matched to hold the washer by glue, and the lower yoke of the magnet by glue, the washer is fixed to the front plate with five screws.
  • the yoke is extended in its middle with a cylindrical metal part in one piece the yoke. On top of the cylindrical part which contains a through-hole all along, and is used on its top end to install the harmonic eliminator, on its bottom end with a plurality of clips.
  • a back chamber is installed on the bottom side of the magnetic circuit assembly; a cavity is formed between the back chamber and the york; a through hole connecting the cavity and the lumen formed by the top diaphragm and the cylindrical part.
  • the harmonic eliminator is elastically clamped and fixed into the inner wall of the through-hole with the fixing clips, and a space for airflow to pass through is formed between the harmonic eliminator and the through hole for enough clearance.
  • the middle of the back chamber is formed with a deflector cone which extends into the through-hole and is used to guide the airflow to the back chamber sides, which contains damping material.
  • a voice coil is glued to the top dome-shaped diaphragm, this assembly is glued to the dome mounting plate which contains also the electrical terminals wired to the voice coil.
  • the dome mounting plate is clamped and centred with the cylindrical 2 nd positioning tip on the washer and a 1 st alignment tip on the dome mounting plate, kept in place between the washer and the front plate.
  • the washer contains the 2 nd positioning tip for the cylindrical part to be installed through.
  • An installation gap is formed between the cylindrical part and the washer for the purpose of installing the voice coil.
  • the magnet is in a ring shape and sits on the cylindrical part.
  • the washer and the front plate are connected together and fixed by a plurality of screws and positioned with a 1st alignment tips formed within the plastic dome mounting plate.
  • a dome mounting plate is installed between the washer and the front plate.
  • the edge of the top dome-shaped diaphragm is installed between the dome mounting plate and the front plate; a 3 rd positioning tip for the top dome-shaped diaphragm to go through the front plate.
  • a 4 th positioning tip on the dome mounting plate matches the 2 nd positioning tip
  • the washer and the front plate are fixed by several screws. At least 2 of 1 st alignment tips on the dome mounting plate are used to align with the 2 nd alignment tip on the washer.
  • the harmonic eliminator is made of plastic.
  • FIG. 1 to 7 it is a dome-shaped diaphragm speaker with a new structure, which comprises: a magnetic circuit assembly (1), a front plate (2) mounted on one (top) side of the magnetic circuit assembly (1), a top dome-shaped diaphragm (3) protruding from the middle of the front plate (2), which is being fixed between the front plate (2) and the magnetic circuit assembly (1).
  • a harmonic eliminator (4) used to eliminate harmful soundwaves or resonances, is being placed between the magnetic circuit assembly (1) and the top diaphragm (3).
  • One end of the harmonic eliminator (4) is installed in the middle of the magnetic circuit assembly (1), and the other (top) end of the harmonic eliminator (4) extends to the inner side of the top diaphragm (3).
  • the harmonic eliminator (4) is designed with a structured concave-convex sound absorbing surface (41) for the purpose of eliminating standing waves and deviating harmful sound waves, thereby acoustic distortions.
  • the harmonic eliminator (4) is installed between the magnetic circuit assembly (1) and magnetic circuit assembly (1), and a structured concave-convex sound absorbing surface (41) of the harmonic eliminator (4) which is located in the inner cavity of the top diaphragm (3) is used to cancel out harmful sound waves, thereby improving speaker distortion.
  • the concave-convex muffler surface 41 on the harmonic eliminator (4) cancels out the harmful sound waves and guides them to the side or below, so that the harmful sound waves behind the top diaphragm (3) will not be reflected to the front to deteriorate the sound quality.
  • the harmful sound waves mainly refer to standing waves.
  • the top end of the harmonic eliminator (4) is matched in its shape with the back of the top diaphragm (3).
  • a 1st positioning tip (42) at the top of the dome-shaped harmonic eliminator (4) is a 1st positioning tip (42) in its centre, which is used to host a sound-absorbing foam (5).
  • the 1st positioning tip (42) is arranged in the middle of the harmonic eliminator (4), and the sound-absorbing foam (5) is installed in the 1st positioning tip (42), so that the harmful sound waves directly below the top diaphragm (3) are directly absorbed by the sound-absorbing foam (5), therefore further improving the sound quality.
  • the part of the harmonic eliminator (4) which extends into the inner ring of the top diaphragm (3) is designed to a spherical shape, which not only ensures that harmonic eliminator (4) is more suitable for the top diaphragm (3) but also protects the top diaphragm (3) from being deformed by depression. Improve the durability of the product, thereby increasing the service life.
  • the concave-convex sound-absorbing surface (41) of the harmonic eliminator (4) includes a plurality of equal parts centred around the 1st positioning tip (42) some trapezoidal ribs (411) that spread out in a wave-like shape and a plurality of inclined surfaces (412) that are centred around the 1st positioning tip (42) and are equally distributed in a fan blade shape and divide the trapezoidal ribs (411) into equal parts.
  • the trapezoidal ribs (411) and the inclined surfaces (412) are used to form uneven shapes similar to the karst landforms so that most of the harmful sound waves will be directly absorbed and offset the energy after entering, and a small part of the sound wave will be reflected and guided to the side or below, thereby cancelling out the harmful sound waves.
  • the magnetic circuit assembly (1) comprises a magnet (11) and is matched to hold the washer (12) by glue, and the lower yoke (13) of the magnet (11) by glue, the washer (12) is fixed to the front plate (2) with five screws (8).
  • the yoke (13) is extended in its middle with a cylindrical metal part (14) in one piece the yoke (13).
  • On top of the cylindrical part (14) which contains a through hole (141) all along, and is used on its top end to install the harmonic eliminator (4), on its bottom end with a plurality of clips (43).
  • the middle of the back chamber (6) is formed with a deflector cone (61) which extends into the through hole (141) and is used to guide the airflow to the back chamber (6) sides, which contains damping material.
  • the back chamber (6) is installed on the bottom side of the magnetic circuit assembly (1); a cavity (60) is formed between the back chamber (6) and the york (13); a through hole (141) connecting the cavity (60) and the lumen formed by the top diaphragm (3) and the cylindrical part (14).
  • the harmonic eliminator (4) is elastically clamped and fixed into the inner wall of the through hole (141) with the fixing clips (43), and space for airflow to pass through is formed between the harmonic eliminator (4) and the through hole (141) for enough clearance and improve the airflow.
  • installing a harmonic eliminator (4) on top of the through hole (141) will prevent the high-frequency sound waves enter the cavity (60), and cause absorption of the high-frequency sound waves, which impacts the sound quality.
  • the washer (12) contains the 2 nd positioning tip (121) for the cylindrical part (14) to be installed through.
  • An installation gap (15) is formed between the cylindrical part (14) and the washer (12) for the purpose of installing the voice coil (9).
  • the magnet (11) is in a ring shape and sits on the cylindrical part (14).
  • the washer (12) and the front plate (2) are connected together and fixed by a plurality of screws (8), and positioned with a 1 st alignment tips (72) formed within the plastic dome mounting plate (7).
  • the dome mounting plate (7) is installed between the washer (12) and the front plate (2).
  • the edge of the top dome-shaped diaphragm (3) is installed between the dome mounting plate (7) and the front plate (2); a 3 rd positioning tip (21) for the top dome-shaped diaphragm (3) to go through the front plate (2).
  • a 4 th positioning tip (71) on the dome mounting plate (7) matches the 2 nd positioning tip (121)
  • the washer (12) and the front plate (2) are fixed by several screws (8). At least 2 of 1 st alignment tips (72) on the dome mounting plate (7) are used to align with the 2 nd alignment tips (122) on the washer (12).
  • the position limit of dome mounting plate (7) relative to the washer (12) is realized, and the relative movement of the dome mounting plate (7) is limited, and the screws (8) also penetrate the dome mounting plate (7) to further fix the positioning of the dome mounting plate (7).
  • the harmonic eliminator (4) is made of plastic material. Since the harmonic eliminator (4) is a plastic part, it has no direct absorption effect on the sound, so it will not absorb the energy of the high-frequency part and the sound of the high-frequency part will not be greatly attenuated.
  • the sound-absorbing foam (5) which is installed in the middle of the harmonic eliminator (4), compared with the traditional sound-absorbing foam, is much smaller and is located in the inner cavity of the harmonic eliminator (4). Therefore, it will not have a great impact on the energy of high-frequency sound, so it can absorb harmful sound waves while absorbing harmful sound waves. It can reduce the impact on the high-frequency sound, achieve the effect of reducing distortion and improve sound quality.
  • the harmonic eliminator (4) which is added to the inner cavity of the top dome-shaped diaphragm (3) utilizes its structured concave-convex sound absorbing surface (41) at the top of the harmonic eliminator (4) to approach the top dome-shaped diaphragm (3).
  • the harmonic eliminator (4) itself is made of plastic material, it causes no impact on sound absorption, it will not absorb the energy of the high-pitched sound, and will not have a great attenuation on the high-frequency part.
  • the utility model discloses a dome-shaped diaphragm loudspeaker driver with a novel structure that comprises: a magnetic circuit assembly, a front plate mounted on one (top) side of the magnetic circuit assembly, a top dome-shaped diaphragm protruding from the middle of the top plate, which is being fixed between the front plate and the magnetic circuit assembly.
  • a harmonic eliminator used to eliminate harmful soundwaves or resonances is being placed between the magnetic circuit assembly and the top diaphragm.
  • the harmonic eliminator is designed with a structured concave-convex sound-absorbing surface for the purpose of eliminating standing waves and deviating harmful sound waves, thereby acoustic distortions.
  • the concave and convex-shaped surfaces on the harmonic eliminator cancel out the harmful sound waves and the remaining ones are guided and then below the harmonic eliminator, so that the harmful sound waves behind the top diaphragm will not be reflected to the top diaphragm.
  • the harmful sound waves mainly refer to standing waves.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP22275118.2A 2022-08-29 2022-08-29 Nouveau haut-parleur structuré à diaphragme en forme de dôme Pending EP4333457A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22275118.2A EP4333457A1 (fr) 2022-08-29 2022-08-29 Nouveau haut-parleur structuré à diaphragme en forme de dôme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22275118.2A EP4333457A1 (fr) 2022-08-29 2022-08-29 Nouveau haut-parleur structuré à diaphragme en forme de dôme

Publications (1)

Publication Number Publication Date
EP4333457A1 true EP4333457A1 (fr) 2024-03-06

Family

ID=83151915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22275118.2A Pending EP4333457A1 (fr) 2022-08-29 2022-08-29 Nouveau haut-parleur structuré à diaphragme en forme de dôme

Country Status (1)

Country Link
EP (1) EP4333457A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555696A (en) * 1978-10-18 1980-04-23 Matsushita Electric Ind Co Ltd Dynamic type speaker
JP2010034988A (ja) * 2008-07-30 2010-02-12 Pioneer Electronic Corp スピーカ装置
JP2010278591A (ja) * 2009-05-27 2010-12-09 Victor Co Of Japan Ltd スピーカユニット
CN111601221A (zh) * 2020-05-28 2020-08-28 歌尔股份有限公司 一种高音发声装置
CN218071789U (zh) * 2022-03-30 2022-12-16 睿慕简化股份公司 一种新型结构的球顶形振膜扬声器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555696A (en) * 1978-10-18 1980-04-23 Matsushita Electric Ind Co Ltd Dynamic type speaker
JP2010034988A (ja) * 2008-07-30 2010-02-12 Pioneer Electronic Corp スピーカ装置
JP2010278591A (ja) * 2009-05-27 2010-12-09 Victor Co Of Japan Ltd スピーカユニット
CN111601221A (zh) * 2020-05-28 2020-08-28 歌尔股份有限公司 一种高音发声装置
CN218071789U (zh) * 2022-03-30 2022-12-16 睿慕简化股份公司 一种新型结构的球顶形振膜扬声器

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Revival Audio Atalante Loudspeakers", HIFI PIG MAGAZINE, 3 August 2022 (2022-08-03), pages 1 - 8, XP093020651, Retrieved from the Internet <URL:https://www.hifipig.com/revival-audio-atalante-loudspeakers/> [retrieved on 20230203] *
ANONYMOUS: "Revival Audio Technology", WEB PAGE OF REVIVAL AUDIO, 30 November 2022 (2022-11-30), pages 1 - 7, XP093020655, Retrieved from the Internet <URL:revivalaudio.fr/technology/overview> [retrieved on 20230203] *
AV ATMOS: "Revival Audio ATALANTE Speakers Debuts featuring expert craftsmanship and modern sound for $2,433.67", 4 August 2022 (2022-08-04), XP093020320, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=SjqATarZbp8> [retrieved on 20230202] *

Similar Documents

Publication Publication Date Title
JP3171542B2 (ja) スピーカ装置及びこれを用いたテレビジョン受像機
CN213028516U (zh) 发声器件
WO2021237791A1 (fr) Dispositif de production de son
KR100188281B1 (ko) 텔레비젼용 스피커 시스템
JPH10262293A (ja) 機器の音響装置
EP4333457A1 (fr) Nouveau haut-parleur structuré à diaphragme en forme de dôme
US20240080625A1 (en) Structured Dome-shaped Diaphragm Loudspeaker
CN218071789U (zh) 一种新型结构的球顶形振膜扬声器
CN211457320U (zh) 一种音箱
CN214177552U (zh) 发声器件
WO2024000691A1 (fr) Caisson de haut-parleur coaxial
WO2021237795A1 (fr) Dispositif de production de son
CN212628368U (zh) 发声器件
JP3211678B2 (ja) スピーカシステム
JPH0737429Y2 (ja) 複合型スピ−カ
CN111447517B (zh) 一种音箱
CN221263966U (zh) 高音模组和音响
CN210958680U (zh) 一种降低失真效果的喇叭
CN220823117U (zh) 一种音腔组件及话机
CN219305021U (zh) 一种有效降低低频范围的外磁球顶扬声器
CN218958968U (zh) 一种具有声道环绕效果的家庭影院式液晶电视机
KR100813302B1 (ko) 컴퓨터용 스피커
CN214429707U (zh) 具有弹波让位结构的喇叭盆架及喇叭
CN213694124U (zh) 一种扬声器
CN219367718U (zh) 一种吸油烟机

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR