WO2021082126A1 - Caisson de haut-parleur - Google Patents

Caisson de haut-parleur Download PDF

Info

Publication number
WO2021082126A1
WO2021082126A1 PCT/CN2019/120471 CN2019120471W WO2021082126A1 WO 2021082126 A1 WO2021082126 A1 WO 2021082126A1 CN 2019120471 W CN2019120471 W CN 2019120471W WO 2021082126 A1 WO2021082126 A1 WO 2021082126A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover plate
steel sheet
upper cover
lower cover
speaker box
Prior art date
Application number
PCT/CN2019/120471
Other languages
English (en)
Chinese (zh)
Inventor
印兆宇
李科
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
Publication of WO2021082126A1 publication Critical patent/WO2021082126A1/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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • H04R9/02—Details
    • 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 electro-acoustic conversion, in particular to a speaker box.
  • the speaker adopts the method of exposing the magnetic bowl, and the steel sheet is embedded on the speaker shell, the magnetic bowl is exposed through the steel sheet, and the steel sheet is injected into the large surface of the back cavity to achieve the goal of increasing the volume of the back cavity.
  • the edge of the steel sheet is usually provided with feet to enhance the fixation with the shell, and the setting of the feet has certain requirements on the size of the shell edge, and the seal between the steel sheet and the magnetic bowl is also easy to overflow glue.
  • the purpose of the utility model is to provide a loudspeaker box, which can reduce the distance between the loudspeaker unit and the upper cover plate of the loudspeaker to about 0.2 mm.
  • the present invention provides a speaker box, which includes an upper cover plate, a lower cover plate assembled with the upper cover plate to form an accommodation space, and a speaker unit assembled in the accommodation space,
  • the speaker unit includes a diaphragm and a magnetic bowl, the diaphragm and the upper cover plate are directly opposite and arranged at intervals, the gap between the diaphragm and the upper cover plate is a front acoustic cavity, and the upper cover
  • the plate includes a sound guide channel for communicating the front sound cavity with the external environment
  • the speaker box also includes a steel sheet embedded in the lower cover plate, the steel sheet is penetrated with a through hole, and the steel sheet includes A flat portion surrounding the through hole and a flange extending from a side of the flat portion away from the through hole at least partially in a direction close to the upper cover plate, and the flange is embedded in the lower cover A plate, the flange is provided with a gap communicating with the through hole, and the side of the magnetic bowl away from the di
  • the magnetic bowl extends through the notch and abuts against the lower cover plate.
  • the lower cover plate includes a first wall adjacent to the gap and a second wall that is connected end to end with the first wall to form an annular shape, and the gap between the magnetic bowl and the first wall The minimum distance is smaller than the minimum distance between the magnetic bowl and the second wall.
  • the steel sheet further includes a transition portion bent and extended from the outer peripheral edge of the flat portion away from the through hole in a direction away from the upper cover plate, and a transition portion connected between the transition portion and the second The steel sheet body between the walls.
  • the outer edge of the steel sheet body is bent in the direction of the diaphragm to form a bent edge, and the bent edge is fixed in the lower cover plate by injection molding.
  • the plane portion is flush with the step groove.
  • the peripheral edge of the magnetic bowl is recessed toward the upper cover plate to form a sink groove, and the sink groove communicates with the step groove.
  • the beneficial effect of the utility model is that the stepped groove is provided on the first wall closest to the magnetic bowl, thereby saving the space required for the steel sheet to bend the feet in the traditional technology, so that the speaker unit can reach the lower cover.
  • the space requirement for the edge of the board is reduced, which can be reduced to about 0.2mm.
  • Figure 1 is a perspective view of the speaker box of the present invention
  • Figure 2 is a perspective exploded view of the speaker box of the present invention
  • Figure 3 is a cross-sectional view along the short side of the speaker box of the present invention.
  • Figure 4 is a cross-sectional view along the long side of the speaker box of the present invention.
  • the present invention provides a speaker box 100, which includes an upper cover plate 1, a lower cover plate 3 assembled with the upper cover plate 1 to form a containing space 2, and a lower cover plate 3 assembled with the upper cover plate 1
  • the speaker unit 4 in the accommodating space 2 the speaker unit 4 includes a diaphragm 41 and a magnetic bowl 42, the diaphragm 41 is directly opposite to the upper cover 1 and is arranged at intervals, and the diaphragm 41 is opposite to each other.
  • the gap between the upper cover plate 1 is the front acoustic cavity 5, and the upper cover plate 1 includes a sound guide channel 11 for communicating the front acoustic cavity 5 with the external environment.
  • the speaker box 100 further includes a steel sheet 6 embedded in the lower cover 3, the steel sheet 6 is penetrated with a through hole 60, the steel sheet 6 includes surrounding the through hole 60
  • the flat portion 61 of the hole 60 and the flange 62 extending from the side of the flat portion 61 away from the through hole 60 at least partially bent toward the upper cover plate 1, and the flange 62 is embedded in the ⁇ 3 ⁇ Described under cover 3.
  • the flange 62 is provided with a gap 620 communicating with the through hole 60, and a side of the magnetic bowl 42 away from the diaphragm 41 is exposed at least partially through the through hole 60 and the gap 620.
  • the magnetic bowl 42 extends through the notch 620 and abuts the lower cover 3.
  • the side of the lower cover 3 adjacent to the notch 620 sinks to form a stepped groove 30 flush with the plane portion 61.
  • the step groove 30 is in communication with the notch 620, and the speaker unit 4 and the lower cover 3 are sealed with glue in the step groove 30 and the notch 620.
  • the lower cover 3 includes a first wall 31 adjacent to the notch 620, and a second wall 32 that is connected end to end with the first wall 31 to form a ring shape.
  • the magnetic bowl 42 and the first wall The minimum distance between 31 is smaller than the minimum distance between the magnetic bowl 42 and the second wall 32, so that the space requirement from the speaker unit 4 to the first wall 31 is reduced to about 0.2 mm.
  • the steel sheet 6 further includes a transition portion 63 bent and extended from the outer periphery of the flat portion 61 away from the through hole 60 in a direction away from the upper cover plate 1, and connected between the transition portion 63 and the upper cover plate 1.
  • the steel sheet body 64 between the second walls 32. The outer edge of the steel sheet body 64 is bent toward the diaphragm 41 to form a bent edge 640, and the bent edge 640 is fixed in the lower cover 3 by injection molding.
  • the peripheral edge of the magnetic bowl 42 is recessed in the direction of the upper cover 1 to form a sink groove 420, and the sink groove 420 is in communication with the step groove 30.
  • the speaker box 100 further includes a conductive terminal 7 fixed on the speaker unit 4, and the speaker unit 4 is electrically connected to the outside through the conductive terminal 7.
  • the beneficial effect of the utility model is that the stepped groove is provided on the first wall closest to the magnetic bowl, thereby saving the space required for the steel sheet to bend the feet in the traditional technology, so that the speaker unit can reach the first wall.
  • the space requirement of the wall is reduced, which can be reduced to about 0.2mm.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention concerne un caisson de haut-parleur comprenant une plaque de couverture supérieure, une plaque de couverture inférieure et une unité de haut-parleur. L'unité de haut-parleur comprend une membrane de vibration et un bol magnétique. La membrane de vibration est espacé vis-à-vis de la plaque de couverture supérieure et fait face à celle-ci. Le caisson de haut-parleur comprend en outre une feuille d'acier ayant un trou traversant. La feuille d'acier comprend une partie plate et une partie courbée disposée au niveau de la plaque de couverture inférieure. La partie courbée a un évidement en communication avec le trou traversant. Au moins une partie d'un côté du bol magnétique à l'opposé de la membrane de vibration est exposée au niveau de la feuille d'acier par l'intermédiaire du trou traversant et de l'évidement. Un côté de la plaque de couverture inférieure adjacente à l'évidement est en retrait pour former un évidement étagé en communication avec l'évidement.
PCT/CN2019/120471 2019-11-01 2019-11-25 Caisson de haut-parleur WO2021082126A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921876627.8 2019-11-01
CN201921876627.8U CN210781204U (zh) 2019-11-01 2019-11-01 扬声器箱

Publications (1)

Publication Number Publication Date
WO2021082126A1 true WO2021082126A1 (fr) 2021-05-06

Family

ID=71049171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/120471 WO2021082126A1 (fr) 2019-11-01 2019-11-25 Caisson de haut-parleur

Country Status (2)

Country Link
CN (1) CN210781204U (fr)
WO (1) WO2021082126A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204046811U (zh) * 2014-09-01 2014-12-24 歌尔声学股份有限公司 扬声器模组
CN205092959U (zh) * 2015-11-04 2016-03-16 歌尔声学股份有限公司 一种扬声器模组
WO2016078413A1 (fr) * 2014-11-20 2016-05-26 歌尔声学股份有限公司 Module de haut-parleur
US20180070168A1 (en) * 2015-04-30 2018-03-08 Goertek Inc. Loudspeaker module
CN207099321U (zh) * 2017-08-02 2018-03-13 瑞声科技(新加坡)有限公司 扬声器箱及电子终端设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204046811U (zh) * 2014-09-01 2014-12-24 歌尔声学股份有限公司 扬声器模组
WO2016078413A1 (fr) * 2014-11-20 2016-05-26 歌尔声学股份有限公司 Module de haut-parleur
US20180070168A1 (en) * 2015-04-30 2018-03-08 Goertek Inc. Loudspeaker module
CN205092959U (zh) * 2015-11-04 2016-03-16 歌尔声学股份有限公司 一种扬声器模组
CN207099321U (zh) * 2017-08-02 2018-03-13 瑞声科技(新加坡)有限公司 扬声器箱及电子终端设备

Also Published As

Publication number Publication date
CN210781204U (zh) 2020-06-16

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