WO2021000106A1 - Enceinte de haut-parleur - Google Patents

Enceinte de haut-parleur Download PDF

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Publication number
WO2021000106A1
WO2021000106A1 PCT/CN2019/094003 CN2019094003W WO2021000106A1 WO 2021000106 A1 WO2021000106 A1 WO 2021000106A1 CN 2019094003 W CN2019094003 W CN 2019094003W WO 2021000106 A1 WO2021000106 A1 WO 2021000106A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
speaker box
sound
top wall
upper shell
Prior art date
Application number
PCT/CN2019/094003
Other languages
English (en)
Chinese (zh)
Inventor
任莉
吴军
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094003 priority Critical patent/WO2021000106A1/fr
Priority to CN201921031353.2U priority patent/CN210093483U/zh
Publication of WO2021000106A1 publication Critical patent/WO2021000106A1/fr

Links

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
    • 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

  • This application relates to the field of electro-acoustic conversion, in particular to a speaker box.
  • the speaker box is used as a voice playback device, and its design directly affects the voice performance of mobile communication equipment products. In order to meet the market's demand for thinness and high sound quality, higher requirements are put forward for the design of the speaker box.
  • the speaker box includes an upper shell, a lower shell, and a sound-producing unit.
  • the sound-producing unit includes a diaphragm.
  • the diaphragm is separated from the upper case to form a front sound cavity.
  • the sound guide channel is formed on the side wall of the upper case, the front sound cavity and the sound guide. The channel forms the front cavity, and this structure will produce a resonance peak in the high frequency response; with the popularization of stereo applications on mobile phones, speakers no longer pursue high high frequency response, and high frequency response (especially 4000Hz to 6000Hz) High can cause poor sound quality such as harsh sound and sharp labial and tooth sound.
  • the main technical problem solved by this application is how to effectively reduce the high-frequency resonance peak value and sensitivity of the speaker box.
  • the present application provides a speaker box, which includes an upper shell, a lower shell that cooperates with the upper shell to form a receiving space, and a sounding unit accommodated in the receiving space.
  • the accommodating space is divided into a front cavity and a rear cavity
  • the sound emitting monomer includes a diaphragm for vibrating and sounding
  • the diaphragm and the upper shell are spaced apart to form a front sound cavity
  • the upper shell is formed with the A sound guide channel between the front acoustic cavity and the outside, the sound guide channel and the front acoustic cavity together constitute the front cavity
  • the upper shell includes a top wall disposed opposite to the diaphragm, and a communication channel disposed through the top wall A hole and a steel sheet covering the through hole
  • the speaker box further includes a recess formed from the steel sheet toward the receiving space, and a cover plate covering the recess, the cover The plate cooperates with the concave portion to form a resonant cavity
  • the cover plate
  • the through hole and the resonant cavity are respectively communicated with the front acoustic cavity, and the recessed portion is penetrated with a first port communicating with the front cavity ,
  • the side of the recessed portion away from the sound-emitting unit is surrounded by a second through opening communicating with the outside, and the cover plate is provided on the second through opening and fixed to the recessed portion.
  • the upper shell further includes a through hole extending from a side of the top wall close to the sound emitting unit toward the lower shell and surrounding the through hole
  • a supporting wall and a receiving wall extending from the side of the top wall close to the sounding monomer toward the lower shell are provided, the supporting wall is used to fix the sounding monomer, and the receiving wall is located in the The supporting wall is away from one side of the sound emitting monomer and is arranged around the resonant cavity.
  • the supporting wall is provided with a gap corresponding to the first through opening, and the gap is connected with the first through opening.
  • the resonant cavity communicates with the front acoustic cavity through the first through opening and the gap.
  • the resonant cavity and the sound guide channel are respectively arranged on opposite sides of the sound emitting monomer.
  • the top wall, the receiving wall and the supporting wall are integrally formed, and the steel sheet is fixed to the outer surface of the top wall by injection molding.
  • the orthographic projection of the steel sheet toward the lower shell simultaneously falls into the sound guide channel and the front acoustic cavity.
  • the upper shell and the lower shell are fixed by ultrasonic sealing.
  • the cover plate is a PET film.
  • the speaker box provided by the present application is provided with a resonant cavity connected to the front acoustic cavity on the steel sheet.
  • the volume of the front cavity is changed to increase the cavity volume of the front cavity and improve the high-frequency acoustic performance.
  • the effect of different frequency response curves can be obtained, which effectively reduces the Q value (quality factor value) and sensitivity of the high frequency resonance peak of the speaker box, and improves The high-frequency sense of hearing makes the acoustic performance of the speaker box better.
  • Figure 1 is a perspective view of a certain perspective of the speaker box provided by this application.
  • Figure 2 is an exploded view of the speaker box in Figure 1;
  • Figure 3 is an enlarged structural view of the steel sheet in Figure 3;
  • Figure 4 is a perspective view of another perspective of the speaker box provided by this application.
  • Fig. 5 is a sectional view taken along the line V-V in Fig. 4;
  • Figure 1 is a perspective view of the speaker box provided by this application
  • Figure 2 is an exploded view of the speaker box in Figure 1
  • Figure 3 is an enlarged structural view of the steel sheet in Figure 3
  • 4 is another perspective view of the speaker box provided by this application
  • FIG. 5 is a cross-sectional view along line VV in FIG. 4.
  • the present application provides a speaker box 100, which includes an upper shell 1, a lower shell 2, a sound-producing monomer 3 with a diaphragm 31, a cover plate 4, a resonant cavity 10, a front acoustic cavity 20, a sound guide channel 30, a front cavity 40, and After the cavity 50.
  • the upper shell 1 and the lower shell 2 are fixed by ultrasonic sealing.
  • the upper shell 1 is used to carry and protect the sound emitting monomer 3
  • the lower shell 2 is arranged on the upper shell 1 and cooperates with the upper shell 1 to form a receiving space, and the sound emitting monomer 3 is accommodated in
  • the receiving space is divided into the front cavity 40 and the rear cavity 50.
  • the diaphragm 31 is used for vibrating and sounding, the upper shell 1 and the diaphragm 31 are spaced apart to form the front acoustic cavity 20, and the sound guide channel 30 is formed in the upper shell 1 and communicates with the front acoustic cavity 20 and the outside.
  • the front acoustic cavity 20 and the sound guide channel 30 together form the front cavity 40 for conducting sound to the outside.
  • the upper shell 1, the lower shell 2 and the diaphragm 31 cooperate
  • the back cavity 50 is formed.
  • the upper shell 1 includes a top wall 11 disposed opposite to the diaphragm 31, a through hole 111 penetrating through the top wall 11 and communicating with the front acoustic cavity 20, and a steel sheet 12 completely covering the through hole 111 And a support wall 13 extending from the top wall 11 close to the sounding monomer 3 in the direction of the lower shell 2 and arranged around the through hole 111, and extending from the inner side of the top wall 11 toward the lower shell 2
  • the top wall 11, the containing wall 14, and the support 13 are integrally formed
  • the steel sheet 12 is fixed on the outer surface of the top wall 11 by injection molding, and the steel The sheet 12 is arranged flush with the top wall 11, and such a structure does not occupy the height space of the speaker box 100, which is beneficial to meet the design requirements of the speaker box 100 to be thin and light.
  • the steel sheet 12 is fixed on the outer surface of the top wall 11 by injection molding, and the steel sheet 12 is provided with a recessed portion 121 extending in the direction of the lower shell 2, and the recessed portion 121 penetrates
  • the first port 1211 communicating with the front cavity 40 and the side of the recessed portion 121 away from the sounding unit 3 are surrounded by a second port 1212 communicating with the outside, and the cover plate 4 is provided on the
  • the second opening 1212 is sealed and fixed to the recessed portion 121, the cover plate 4 and the recessed portion 121 cooperate to form a resonant cavity 10, and the resonant cavity 10 is arranged outside the supporting wall 13, and
  • the resonant cavity 10 and the front cavity 40 communicate with each other to form a resonant structure of the resonant cavity 10 and the front cavity 40.
  • a side of the supporting wall 13 close to the recessed portion 121 is provided with a notch 131 penetrating through the supporting wall 13, the first through opening 1211 is provided at a position corresponding to the notch 131, and the notch 131 and The first port 1211 communicates with each other, and further, the resonant cavity 10 communicates with the front acoustic cavity 20 through the first port 1211 and the gap 131.
  • the resonant cavity 10 and the sound guide channel 30 are respectively arranged on opposite sides of the sound emitting monomer 3.
  • the thickness of the steel sheet 12 is much smaller than the thickness of the top wall 11, a part of the top wall 11 is replaced with the steel sheet 12.
  • the steel sheet 12 disposed directly opposite the connection between the sound guide channel 30 and the front sound cavity 20 greatly increases the sound output height of the sound guide channel 30, and this structure is beneficial to the front cavity 40 The sound airflow is smooth, thereby effectively improving the acoustic performance and hearing sense of the speaker box 100.
  • the orthographic projection of the steel sheet 12 toward the lower shell 2 falls into the sound guide channel 30 and the front acoustic cavity 20 at the same time. That is, the steel sheet 12 is directly facing the connection between the sound guide channel 30 and the front acoustic cavity 20.
  • the steel sheet 12 is harder than the top wall 11, that is, the amount of Young's film of the steel sheet 12 is greater than the amount of Young's film of the top wall 11. This structure can be used to reduce the total amount of the speaker box 100.
  • the harmonic peak distortion of the front cavity 40 improves its acoustic performance.
  • the supporting wall 13 is used to hold the sound emitting monomer 3 and the supporting wall 13 and the sound emitting monomer 3 are fixed by glue. In this way, the sound emitting monomer 3 and the supporting wall 13 can form a firm connection structure.
  • the receiving wall 14 is connected to a side of the supporting wall 13 away from the sound emitting unit 3 and arranged around the resonant cavity 10, and the surrounding shape of the receiving wall 14 and the supporting wall 13 is the same as that of the The shape of the recess 121 matches.
  • the cover plate 4 is a PET film made of PET material.
  • the PET cover plate 4 is arranged directly opposite to the recess 121 and is sealed with the steel sheet 12.
  • PET material has high strength, light weight, excellent wear resistance, dimensional stability, creep resistance and fatigue resistance, and is cheap and has a high cost performance.
  • the speaker box provided by the present application is provided with a resonant cavity connected to the front acoustic cavity on the steel sheet.
  • the volume of the front cavity is changed to increase the cavity volume of the front cavity and improve the high-frequency acoustic performance.
  • the effect of different frequency response curves can be obtained, which effectively reduces the Q value (quality factor value) and sensitivity of the high frequency resonance peak of the speaker box, and improves The high-frequency sense of hearing makes the acoustic performance of the speaker box better.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention concerne une enceinte de haut-parleur, comprenant un boîtier supérieur, un boîtier inférieur qui s'ajuste avec le boîtier supérieur pour former un espace de réception, et une unité d'émission de son logée dans l'espace de réception ; l'unité d'émission de son divise l'espace de réception en une chambre avant et une chambre arrière ; le boîtier supérieur comprend une paroi supérieure disposée à l'opposé de la membrane, un trou traversant disposé à travers la paroi supérieure, et une feuille d'acier disposée de manière à recouvrir complètement le trou traversant ; l'enceinte de haut-parleur comprend en outre une partie évidée formée sous la forme d'un évidement à partir de la feuille d'acier dans la direction de l'espace de réception, et une plaque de recouvrement ; la plaque de recouvrement coopère avec la partie évidée pour former une chambre de résonance ; la chambre de résonance est en communication avec la chambre avant. Par rapport à l'état de la technique associé, l'enceinte de haut-parleur de la présente invention a de meilleures performances acoustiques.
PCT/CN2019/094003 2019-06-29 2019-06-29 Enceinte de haut-parleur WO2021000106A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/094003 WO2021000106A1 (fr) 2019-06-29 2019-06-29 Enceinte de haut-parleur
CN201921031353.2U CN210093483U (zh) 2019-06-29 2019-07-02 扬声器箱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/094003 WO2021000106A1 (fr) 2019-06-29 2019-06-29 Enceinte de haut-parleur

Publications (1)

Publication Number Publication Date
WO2021000106A1 true WO2021000106A1 (fr) 2021-01-07

Family

ID=69484727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/094003 WO2021000106A1 (fr) 2019-06-29 2019-06-29 Enceinte de haut-parleur

Country Status (2)

Country Link
CN (1) CN210093483U (fr)
WO (1) WO2021000106A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112153526A (zh) * 2020-09-07 2020-12-29 维沃移动通信有限公司 发声装置及电子设备
CN115209287A (zh) * 2021-04-09 2022-10-18 深圳市韶音科技有限公司 一种耳机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060126870A1 (en) * 2004-12-10 2006-06-15 Asustek Computer Inc. Portable computer and side direction sound box thereof
CN108882126A (zh) * 2018-08-02 2018-11-23 瑞声科技(新加坡)有限公司 扬声器箱
CN108882125A (zh) * 2018-08-02 2018-11-23 瑞声科技(新加坡)有限公司 扬声器箱
CN109218860A (zh) * 2018-08-02 2019-01-15 瑞声科技(新加坡)有限公司 扬声器箱

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060126870A1 (en) * 2004-12-10 2006-06-15 Asustek Computer Inc. Portable computer and side direction sound box thereof
CN108882126A (zh) * 2018-08-02 2018-11-23 瑞声科技(新加坡)有限公司 扬声器箱
CN108882125A (zh) * 2018-08-02 2018-11-23 瑞声科技(新加坡)有限公司 扬声器箱
CN109218860A (zh) * 2018-08-02 2019-01-15 瑞声科技(新加坡)有限公司 扬声器箱

Also Published As

Publication number Publication date
CN210093483U (zh) 2020-02-18

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