WO2021077461A1 - Enceinte de haut-parleur et dispositif terminal - Google Patents

Enceinte de haut-parleur et dispositif terminal Download PDF

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Publication number
WO2021077461A1
WO2021077461A1 PCT/CN2019/115048 CN2019115048W WO2021077461A1 WO 2021077461 A1 WO2021077461 A1 WO 2021077461A1 CN 2019115048 W CN2019115048 W CN 2019115048W WO 2021077461 A1 WO2021077461 A1 WO 2021077461A1
Authority
WO
WIPO (PCT)
Prior art keywords
speaker box
steel sheet
conductive
copper foil
foil layer
Prior art date
Application number
PCT/CN2019/115048
Other languages
English (en)
Chinese (zh)
Inventor
李金明
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 WO2021077461A1 publication Critical patent/WO2021077461A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • 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 sound-electric conversion, in particular to a speaker box and terminal equipment.
  • the purpose of the utility model is to provide a loudspeaker box and terminal equipment to solve the technical problems of large instability in resistance and fluctuations in overall conductivity in the prior art when the sound generating unit is connected to the end of the complete machine.
  • a speaker box comprising an upper cover plate, a lower cover plate forming a receiving cavity with the upper cover plate, a sound emitting unit contained in the receiving cavity, and a steel sheet fixed on the lower cover plate ,
  • the lower cover plate is provided with an opening corresponding to the sound emitting monomer, the steel sheet covers the opening, and a conductive foam is arranged between the steel sheet and the sound emitting monomer;
  • the upper cover plate A ground feed point is provided on the speaker box, and the speaker box further includes a conductive sheet connected between the steel sheet and the ground feed point.
  • the conductive sheet includes a copper foil layer and is arranged on the copper foil layer.
  • the conductive adhesive layer is provided with a hollow area, and the steel sheet is connected to the copper foil layer through the hollow area.
  • the steel sheet extends toward the conductive sheet to form a step corresponding to the hollow area, and the copper foil layer is provided with a groove for accommodating the step.
  • the step is in interference connection with the copper foil layer.
  • the step is located at the center of the steel sheet.
  • the orthographic projection of the step and the orthographic projection of the conductive foam at least partially overlap.
  • the conductive sheet includes a first conductive portion attached to the lower cover plate and in contact with the steel sheet, and a first conductive portion attached to the upper cover plate and connected to the ground feed point. Two conductive portions and a connecting portion connecting the first conductive portion and the second conductive portion, and the area of the first conductive portion is larger than the area of the second conductive portion.
  • a terminal device includes a speaker box as described above.
  • the beneficial effect of the utility model is that conductive foam is arranged between the sounding monomer and the steel sheet, and the conductive sheet is connected between the steel sheet and the grounding feed point to realize the ground connection of the sounding monomer.
  • the conductive sheet is made of copper.
  • the foil layer and the conductive adhesive layer arranged on the copper foil layer are formed.
  • a hollow area is opened in the conductive adhesive layer.
  • the steel sheet directly contacts the copper foil layer through the hollow area.
  • the resistance of the copper foil layer and the steel sheet is very low and stable. Direct contact through the unstable conductive adhesive layer in the middle can greatly improve the conductivity.
  • Figure 1 is a schematic diagram of the overall structure of a speaker box of the utility model
  • Fig. 2 is a schematic diagram of an exploded structure of the speaker box shown in Fig. 1;
  • FIG. 3 is a schematic diagram of the structure of the conductive sheet
  • Figure 4 is a cross-sectional view in the direction of A-A in Figure 1;
  • Fig. 5 is a partial enlarged view of B in Fig. 4.
  • Figure 1 is a schematic diagram of the overall structure of a speaker box of the present invention
  • Figure 2 is a schematic diagram of the exploded structure of the speaker box shown in Figure 1
  • Figure 3 is a schematic diagram of the structure of the conductive sheet
  • 4 is a cross-sectional view in the direction of AA in FIG. 1
  • FIG. 5 is a partial enlarged view at B in FIG. 4.
  • the utility model provides a loudspeaker box.
  • the loudspeaker box includes an upper cover plate 10, a lower cover plate 20 that forms a containing cavity with the upper cover plate 10, a sounding monomer 30 contained in the containing cavity, and a speaker box fixed on the lower cover plate 20.
  • Steel sheet 40, the lower cover plate 20 is provided with an opening 21 corresponding to the sounding monomer 30, the steel sheet 40 covers the opening 21, and a conductive foam 50 is arranged between the steel sheet 40 and the sounding monomer 30; the upper cover plate 10 is provided There is a ground feed point.
  • the speaker box also includes a conductive sheet 60 connected between the steel sheet 40 and the ground feed point.
  • the conductive sheet 60 includes a copper foil layer 61 and a conductive adhesive layer 62 arranged on the copper foil layer.
  • the layer 62 is provided with a hollow area, and the steel sheet 40 is connected to the copper foil layer 61 through the hollow area.
  • a conductive foam 50 is provided between the sounding monomer 30 and the steel sheet 40, and the conducting sheet 60 is connected between the steel sheet 40 and the ground feed point to realize the ground connection of the sounding monomer 30.
  • the through sheet 60 is composed of a copper foil layer 61 and a conductive adhesive layer 62 provided on the copper foil layer 61.
  • a hollow area is provided on the conductive adhesive layer 62.
  • the steel sheet 40 is in direct contact with the copper foil layer 61 through the hollow area, and the copper foil layer 61 and The resistance of the steel sheet 40 is very low and stable, and it skips the unstable conductive adhesive layer 62 in the middle to directly contact, which can greatly improve the conductivity.
  • the steel sheet 40 extends toward the conductive sheet 60 to form a step 41 corresponding to the hollowed-out area, and the copper foil layer 61 is provided with a groove 611 for accommodating the step 41.
  • the hollow area is arranged in a rectangular structure, and the step 41 is correspondingly arranged in a rectangular structure. The step 41 is received in the groove 611 through the hollow area to achieve sufficient and stable contact between the steel sheet 40 and the copper foil layer 61.
  • the steel sheet 40 is extended to form a step 41 that is in full contact with the copper foil layer 61.
  • it is not limited to the step 41 to achieve sufficient contact. It is also possible to add bumps corresponding to the groove 611 on the steel sheet 40. To achieve sufficient contact between the steel sheet 40 and the copper foil layer 61.
  • the step 41 and the copper foil layer 61 are interference-connected, so that the steel sheet 40 and the copper foil layer 61 are fully contacted, and the overall conductivity is maintained.
  • the step 41 is located at the center of the steel sheet 40 to ensure that the copper foil layer 61 is in contact with the entire steel sheet 40 in a balanced manner; preferably, the orthographic projection of the step 41 and the orthographic projection of the conductive foam 50 at least partially overlap.
  • the steps 41 and the conductive foam 50 are arranged correspondingly to shorten the conduction path and ensure a smooth conduction path.
  • the conductive sheet 60 includes a first conductive portion 60a attached to the lower cover 20 and in contact with the steel sheet 40, and a second conductive portion 60b attached to the upper cover 10 and connected to the ground feed point.
  • the connecting portion 60c connecting the first conductive portion 60a and the second conductive portion 60b, the area of the first conductive portion 60a is larger than the area of the second conductive portion 60b. Adjust the area of the first conductive portion 60a and the second conductive portion 60b according to the contact between the first conductive portion 60a and the steel sheet 40 and the connection of the second conductive portion 60b with the ground feed point to ensure the contact area and conduction Performance, while saving materials and reducing costs.
  • the utility model also provides a terminal device (not shown), such as a mobile phone, an ipad, etc.
  • the terminal device includes the aforementioned speaker box provided by the utility model.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

La présente invention concerne une enceinte de haut-parleur et un dispositif terminal, l'enceinte de haut-parleur comprenant un panneau de couverture supérieur, un panneau de couvercle inférieur qui forme une cavité de réception avec le panneau de couvercle supérieur, une unité de génération de son logée dans l'unité de réception, et une pièce d'acier fixée sur le panneau de couvercle inférieur. Une ouverture correspondant à l'unité de génération de son est disposée dans le panneau de couvercle inférieur, la pièce d'acier recouvre l'ouverture, et une mousse conductrice est disposée entre la pièce d'acier et l'unité de génération de son. Un point d'alimentation de mise à la masse est disposé sur le panneau de couvercle supérieur, et l'enceinte de haut-parleur comprend en outre une pièce de liaison reliant la pièce d'acier et le point d'alimentation de mise à la terre, la pièce de connexion comprenant une couche de feuille de cuivre et une couche adhésive électriquement conductrice disposée sur la couche de feuille de cuivre, une région creuse étant disposée dans la couche électriquement conductrice, et la pièce d'acier et la couche de feuille de cuivre étant reliées par l'intermédiaire de la région creuse. La présente solution technique peut être utilisée pour résoudre le problème dans l'état de la technique d'une grande instabilité dans la résistance électrique, et des fluctuations de la conductivité globale lorsqu'une unité de génération de son est connectée et mise à la terre à une borne d'un dispositif complet.
PCT/CN2019/115048 2019-10-24 2019-11-01 Enceinte de haut-parleur et dispositif terminal WO2021077461A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921802319.0U CN210781326U (zh) 2019-10-24 2019-10-24 一种扬声器箱及终端设备
CN201921802319.0 2019-10-24

Publications (1)

Publication Number Publication Date
WO2021077461A1 true WO2021077461A1 (fr) 2021-04-29

Family

ID=71040085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/115048 WO2021077461A1 (fr) 2019-10-24 2019-11-01 Enceinte de haut-parleur et dispositif terminal

Country Status (2)

Country Link
CN (1) CN210781326U (fr)
WO (1) WO2021077461A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201114969Y (zh) * 2007-10-16 2008-09-10 青岛海信移动通信技术股份有限公司 一种导电性能良好的铜箔及具有该铜箔的电子设备
CN206341394U (zh) * 2016-10-26 2017-07-18 瑞声科技(新加坡)有限公司 扬声器箱
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
US20180132018A1 (en) * 2015-05-12 2018-05-10 Goertek Inc. Loudspeaker module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201114969Y (zh) * 2007-10-16 2008-09-10 青岛海信移动通信技术股份有限公司 一种导电性能良好的铜箔及具有该铜箔的电子设备
US20180132018A1 (en) * 2015-05-12 2018-05-10 Goertek Inc. Loudspeaker module
CN206341394U (zh) * 2016-10-26 2017-07-18 瑞声科技(新加坡)有限公司 扬声器箱
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
CN210781326U (zh) 2020-06-16

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