WO2021077461A1 - 一种扬声器箱及终端设备 - Google Patents

一种扬声器箱及终端设备 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
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WO
WIPO (PCT)
Prior art keywords
speaker box
steel sheet
conductive
copper foil
foil layer
Prior art date
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Ceased
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PCT/CN2019/115048
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English (en)
French (fr)
Inventor
李金明
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.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2021077461A1 publication Critical patent/WO2021077461A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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; ELECTRIC HEARING AIDS; 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.

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  • 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

本实用新型提供了一种扬声器箱及终端设备，扬声器箱包括上盖板、与所述上盖板形成收容腔的下盖板、收容于所述收容腔中的发声单体以及固定于所述下盖板的钢片，所述下盖板开设有与所述发声单体对应的开口，所述钢片覆盖所述开口，所述钢片与所述发声单体之间设置有导电泡棉；所述上盖板上设置有接地馈点，所述扬声器箱还包括连接在所述钢片与所述接地馈点之间的导通片，所述导通片包括铜箔层和设置在所述铜箔层上的导电胶层，所述导电胶层设置有镂空区，所述钢片经所述镂空区与所述铜箔层相接。运用本技术方案解决了现有技术中发声单体与整机端连通接地时，存在电阻较大不稳定、整体导通性存在波动的技术问题。

Description

一种扬声器箱及终端设备
【 技术领域】
本实用新型涉及声电转换技术领域，尤其涉及一种扬声器箱及终端设备。
【 背景技术】
随着科学技术的快速发展，人们对生活品质的追求越来越高，而便携式多媒体视听设备如笔记本电脑、手机等作为日常生活中的体验扬声器箱，人们对其要求也越来越高。在扬声器箱的生产中，需要将发声单体和下盖钢片接地，且阻值需求小于2欧姆，但是整机接地馈点位置在上盖板的一侧，因此通过带导电胶的导电铜箔贴附在钢片上，将尾部从扬声器箱的侧面引到上盖位置，与整机端连通接地。但是导电胶电阻较大且不稳定，受贴附状态影响，整体导通性存在波动。
因此，有必要提供一种扬声器箱。
【 技术问题】
本实用新型的目的在于提供一种扬声器箱及终端设备，以解决现有技术中发声单体与整机端连通接地时，存在电阻较大不稳定、整体导通性存在波动的技术问题。
【 技术解决方案】
本实用新型的技术方案如下：
一种扬声器箱，所述扬声器箱包括上盖板、与所述上盖板形成收容腔的下盖板、收容于所述收容腔中的发声单体以及固定于所述下盖板的钢片，所述下盖板开设有与所述发声单体对应的开口，所述钢片覆盖所述开口，所述钢片与所述发声单体之间设置有导电泡棉；所述上盖板上设置有接地馈点，所述扬声器箱还包括连接在所述钢片与所述接地馈点之间的导通片，所述导通片包括铜箔层和设置在所述铜箔层上的导电胶层，所述导电胶层设置有镂空区，所述钢片经所述镂空区与所述铜箔层相接。
进一步地，所述钢片朝向所述导通片延伸形成与所述镂空区相对应的台阶，所述铜箔层开设有用于容纳所述台阶的凹槽。
进一步地，所述台阶与所述铜箔层过盈连接。
进一步地，所述台阶位于所述钢片的中心处。
进一步地，所述台阶的正投影与所述导电泡棉的正投影至少部分重叠。
进一步地，所述导通片包括贴设在所述下盖板并与所述钢片相接触的第一导通部、贴设在所述上盖板并与所述接地馈点连接的第二导通部以及连接所述第一导通部和所述第二导通部的连接部，所述第一导通部的面积大于所述第二导通部的面积。
进一步地，一种终端设备，所述终端设备包括如前所述扬声器箱。
【 有益效果】
本实用新型的有益效果在于：发声单体与钢片之间设置有导电泡棉，导通片连接在钢片与接地馈点之间，以实现发声单体的接地连接，导通片由铜箔层和设置在铜箔层上的导电胶层构成，在导电胶层开设镂空区，钢片经过镂空区与铜箔层直接接触，铜箔层及钢片的电阻均很低且稳定，跳过中间不稳定的导电胶层直接接触，可大幅提高导通性。运用本技术方案解决了现有技术中发声单体与整机端连通接地时，存在电阻较大不稳定、整体导通性存在波动的技术问题。
【 附图说明】
图1为本实用新型的一种扬声器箱的整体结构示意图；
图2为图1所示扬声器箱的分解结构示意图；
图3为导通片的结构示意图；
图4为图1中A-A方向的剖视图；
图5为图4中B处的局部放大图。
【 本发明的实施方式】
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本实用新型。
应该指出，以下详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
请同时参见图1-图4，其中，图1为本实用新型一种扬声器箱的整体结构示意图;图2为图1所示扬声器箱的分解结构示意图;图3为导通片的结构示意图；图4为图1中A-A方向的剖视图;图5为图4中B处的局部放大图。
本实用新型提供了一种扬声器箱，扬声器箱包括上盖板10、与上盖板10形成收容腔的下盖板20、收容于收容腔中的发声单体30以及固定于下盖板20的钢片40，下盖板20开设有与发声单体30对应的开口21，钢片40覆盖开口21，钢片40与发声单体30之间设置有导电泡棉50；上盖板10上设置有接地馈点，扬声器箱还包括连接在钢片40与接地馈点之间的导通片60，导通片60包括铜箔层61和设置在铜箔层上的导电胶层62，导电胶层62设置有镂空区，钢片40经镂空区与铜箔层61相接。
在本技术方案中，发声单体30与钢片40之间设置有导电泡棉50，导通片60连接在钢片40与接地馈点之间，以实现发声单体30的接地连接，导通片60由铜箔层61和设置铜箔层61上的导电胶层62构成，在导电胶层62开设镂空区，钢片40经过镂空区与铜箔层61直接接触，铜箔层61及钢片40的电阻均很低且稳定，且跳过中间不稳定的导电胶层62直接接触，可大幅提高导通性。运用本技术方案解决了现有技术中发声单体30与整机端连通接地时，存在电阻较大不稳定、整体导通性存在波动的技术问题。
进一步地，钢片40朝向导通片60延伸形成与镂空区相对应的台阶41，铜箔层61开设有用于容纳台阶41的凹槽611。在本实施例中，镂空区为矩形结构设置，台阶41相对应呈矩形结构设置，台阶41经镂空区收容于凹槽611中，实现钢片40与铜箔层61的充分稳定接触。
本实施例通过钢片40延伸形成台阶41与铜箔层61充分接触，然而并不局限于通过台阶41来实现充分，还可以在钢片40上增设与凹槽611相对应的凸点等，来实现钢片40与铜箔层61的充分接触。
优选地，台阶41与铜箔层61过盈连接，进一步使钢片40与铜箔层61充分接触，保持整体的导通性。
进一步地，台阶41位于钢片40的中心处，以保证铜箔层61与整片钢片40接触均衡；优选地，台阶41的正投影与导电泡棉50的正投影至少部分重叠，当通过导电泡棉50来确保发声单体30与钢片40的连通时，将台阶41与导电泡棉50对应设置，缩短导通路径，保证导通路径顺畅。
参见图2，导通片60包括贴设在下盖板20并与钢片40相接触的第一导通部60a、贴设在上盖板10并与接地馈点连接的第二导通部60b以及连接第一导通部60a和第二导通部60b的连接部60c，第一导通部60a的面积大于第二导通部60b的面积。根据第一导通部60a与钢片40相接触、第二导通部60b与接地馈点连接来调整第一导通部60a和第二导通部60b的面积，既保证接触面积保证导通性，同时节省材料，降低成本。
本实用新型还提供了一种终端设备（未图示），比如手机、ipad等，该终端设备包括本实用新型提供的上述的扬声器箱。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
以上的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (7)

  1. 一种扬声器箱，所述扬声器箱包括上盖板、与所述上盖板形成收容腔的下盖板、收容于所述收容腔中的发声单体以及固定于所述下盖板的钢片，所述下盖板开设有与所述发声单体对应的开口，所述钢片覆盖所述开口，所述钢片与所述发声单体之间设置有导电泡棉；所述上盖板上设置有接地馈点，所述扬声器箱还包括连接在所述钢片与所述接地馈点之间的导通片，所述导通片包括铜箔层和设置所述铜箔层上的导电胶层，其特征在于，所述导电胶层设置有镂空区，所述钢片经所述镂空区与所述铜箔层相接。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述钢片朝向所述导通片延伸形成与所述镂空区相对应的台阶，所述铜箔层开设有用于容纳所述台阶的凹槽。
  3. 根据权利要求2所述的扬声器箱，其特征在于，所述台阶与所述铜箔层过盈连接。
  4. 根据权利要求3所述的扬声器箱，其特征在于，所述台阶位于所述钢片的中心处。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述台阶的正投影与所述导电泡棉的正投影至少部分重叠。
  6. 根据权利要求5所述的扬声器箱，其特征在于，所述导通片包括贴设在所述下盖板并与所述钢片相接触的第一导通部、贴设在所述上盖板并与所述接地馈点连接的第二导通部以及连接所述第一导通部和所述第二导通部的连接部，所述第一导通部的面积大于所述第二导通部的面积。
  7. 一种终端设备，其特征在于，所述终端设备包括如权利要求1-6中任一项所述扬声器箱。
PCT/CN2019/115048 2019-10-24 2019-11-01 一种扬声器箱及终端设备 Ceased WO2021077461A1 (zh)

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CN206341394U (zh) * 2016-10-26 2017-07-18 瑞声科技(新加坡)有限公司 扬声器箱
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