WO2021109195A1 - 扬声器单体的声学测试密封结构 - Google Patents

扬声器单体的声学测试密封结构 Download PDF

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Publication number
WO2021109195A1
WO2021109195A1 PCT/CN2019/124840 CN2019124840W WO2021109195A1 WO 2021109195 A1 WO2021109195 A1 WO 2021109195A1 CN 2019124840 W CN2019124840 W CN 2019124840W WO 2021109195 A1 WO2021109195 A1 WO 2021109195A1
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WIPO (PCT)
Prior art keywords
sealing
steel sheet
speaker unit
positioning device
sealing structure
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PCT/CN2019/124840
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English (en)
French (fr)
Inventor
姚敬东
谢远东
郑欠欠
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声精密制造科技(常州)有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声精密制造科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2021109195A1 publication Critical patent/WO2021109195A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements

Definitions

  • the utility model relates to the technical field of acoustic testing, in particular to an acoustic testing sealing structure of a speaker unit.
  • the new speaker unit uses a narrower basin frame, which makes the upper mold step surface narrower than the traditional unit. This results in a narrower edge and smaller area for sealing during the test process, which leads to a higher risk of test air leakage.
  • the purpose of the utility model is to provide an acoustic test sealing structure of a speaker unit, which can solve the technical problem of poor sealing performance in the acoustic performance test of the speaker unit in the related art.
  • the present invention provides an acoustic test sealing structure for a speaker unit, which is characterized by comprising a test baffle, a sealing pad and a positioning device, and the test baffle includes an inner portion close to the positioning device.
  • the test baffle is penetrated with a sound hole extending from the inner surface to the outer surface, and the inner surface is recessed to form a sound hole arranged around the sound hole
  • the sealing gasket is ring-shaped and having a through hole corresponding to the sound hole
  • the sealing gasket is installed in the sealing groove
  • the positioning device includes a speaker unit for accommodating a speaker to be tested The positioning device is fixed on the inner surface and abuts against the sealing pad, the receiving hole is arranged corresponding to the sound hole, and the sealing pad includes a steel sheet and is attached to the steel sheet Silicone sheet on the surface
  • the inner surface includes a support surface for supporting the gasket and an extension surface extending from the side of the support surface away from the through hole in a direction away from the outer surface, and the extension surface is connected to the The supporting surface encloses the sealing groove, the steel sheet is clamped in the sealing groove, and the side of the steel sheet away from the through hole abuts against the extension surface.
  • the number of the silicone sheet is one piece, and is attached to the surface of the steel sheet on the side facing the positioning device.
  • the number of the silica gel sheets is two, and the steel sheet is sandwiched between the two silica gel sheets.
  • a part of the silicone sheet provided on the side of the steel sheet close to the positioning device is exposed in the receiving hole and corresponds to the speaker unit.
  • the inner surface further includes a mounting groove recessed from the supporting surface for clamping the silicone sheet.
  • the silica gel sheet is a vulcanized silica gel sheet adhered to the steel sheet.
  • the size tolerance of the steel sheet is ⁇ 0.01 mm.
  • the size tolerance of the silicone sheet is ⁇ 0.1mm.
  • the beneficial effects of the utility model are: the zero-clearance fit between the steel sheet and the test baffle plate ensures the assembly accuracy and the test sealing; the double-sided use of the steel sheet extends the service life of the sealing gasket.
  • Figure 1 is a perspective view of the acoustic test sealing structure of the speaker unit of the present invention
  • Figure 2 is a three-dimensional exploded view of the acoustic test sealing structure of the speaker unit of the present invention
  • Figure 3 is a cross-sectional view of the acoustic test sealing structure of the speaker unit of the present invention.
  • Figure 4 is an enlarged view of part A in Figure 3;
  • Figure 5 is a three-dimensional structural view of the sealing gasket of the present utility model
  • FIG. 6 is a structural cross-sectional view of the first embodiment of the sealing gasket of the present invention.
  • Fig. 7 is a structural cross-sectional view of the second embodiment of the sealing gasket of the present invention.
  • the present invention provides an acoustic test sealing structure 100 for a speaker unit, including a test baffle 1, a sealing pad 2, and a positioning device 3.
  • the test baffle 1, the sealing The belt 2 and the positioning device 3 are sequentially stacked from bottom to top, and the speaker unit 4 to be tested is placed in the positioning device 3.
  • the test baffle 1 is an aluminum machined part with a dimensional tolerance of ⁇ 0.01mm, including the inner surface 11 close to the positioning device 3 and opposite to the inner surface 11
  • the test baffle 1 is provided with a sound hole 13 extending from the inner surface 11 to the outer surface 12 through the outer surface 12, and the inner surface 11 is recessed to form a seal surrounding the sound hole 13 Slot 14, in the specific embodiment of the present invention, the sound hole 13 is a square hole.
  • the sealing gasket 2 is ring-shaped and has a through hole 20 corresponding to the sound hole 13, the sealing tape 2 is installed in the sealing groove 14, and the sealing gasket 2 Including a steel sheet 21 and a silicone sheet 22 attached to the surface of the steel sheet 21.
  • the size tolerance of the steel sheet is ⁇ 0.01mm
  • the size tolerance of the silicone sheet is ⁇ 0.1mm
  • the silicone sheet 22 It is a vulcanized silica gel sheet adhered to the steel sheet 21.
  • the steel sheet 21 is clamped in the sealing groove 14 and the gap between the steel sheet 21 and the sealing groove 14 is zero, so as to ensure the assembly accuracy of the sealing gasket 2 and the test baffle 1 , To ensure that the test is sealed.
  • the number of the silicone sheet 22 is one piece, and it is attached to the side surface of the steel sheet 21 facing the positioning device 3, and the positioning device 3 is installed on the Sealing is achieved on the silicone sheet 22.
  • the number of the silica gel sheets 22 is two, and the steel sheet 21 is sandwiched between the two silica gel sheets 22.
  • the test baffle 1 It also includes a mounting groove 12 for clamping the silicone sheet 22, so that the sealing performance can be enhanced and the service life of the sealing gasket 2 can be delayed.
  • the positioning device 3 includes a receiving hole 31 for accommodating the speaker unit to be tested, the positioning device 3 abuts on the sealing gasket 2 and the receiving hole 31 is arranged corresponding to the sound hole 13, and In this way, it can be ensured that after the speaker unit 4 is positioned, it can be arranged directly opposite to the sound hole 13.
  • the silicone sheet 22 disposed on the side of the steel sheet 21 close to the positioning device 3 is partially exposed in the receiving hole 31 and corresponds to the speaker unit 4.
  • the beneficial effects of the utility model are: the zero-clearance fit between the steel sheet and the test baffle plate ensures the assembly accuracy and the test sealing; the double-sided use of the steel sheet extends the service life of the sealing gasket.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本实用新型涉及了一种扬声器单体的声学测试密封结构，包括测试障板、密封垫以及定位装置，所述测试障板包括内表面以及外表面，所述测试障板贯穿开设有出声孔，所述内表面凹陷形成环绕所述出声孔设置的密封槽，所述密封垫具有通孔，所述密封垫安装于所述密封槽内，所述定位装置包括收容孔，所述定位装置固定于所述内表面，所述密封垫包括钢片和硅胶片，所述内表面包括支撑面以及延伸面，所述延伸面与所述支撑面围成所述密封槽，所述钢片卡设于所述密封槽且所述钢片远离所述通孔的一侧与延伸面抵接。本实用新型的有益效果在于：钢片与测试障板间零间隙配合，保证了装配精度，保证测试密封；钢片双面使用，延长密封垫使用寿命。

Description

扬声器单体的声学测试密封结构 技术领域
本实用新型涉及一种声学测试技术领域，尤其涉及一种扬声器单体的声学测试密封结构。
 背景技术
新型扬声器单体使用更窄盆架，使得上模台阶面较传统单体更窄，这在测试过程中，导致可用于密封的边更窄，面积更小，导致测试漏气几率攀升。
 技术问题
在相关技术中的密封方案，主要由工人手动将GASKET贴在测试工装上，而手动贴合存在较大偏差，且远大于0.15mm，这直接导致测试无法密封，严重影响量产测试良率。为配合新型单体生产，测试密封问题亟待解决。
因此，实有必须提供一种新的扬声器单体的声学测试密封结构解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种扬声器单体的声学测试密封结构，其可以解决相关技术中的扬声器单体的声学性能测试密封性能不良的技术问题。
为了解决上述技术问题，本实用新型提供了一种扬声器单体的声学测试密封结构，其特征在于，包括测试障板、密封垫以及定位装置，所述测试障板包括靠近所述定位装置的内表面以及与所述内表面相对的外表面，所述测试障板贯穿开设有自所述内表面延伸至所述外表面的出声孔，所述内表面凹陷形成环绕所述出声孔设置的密封槽，所述密封垫呈环状且具有对应于所述出声孔的通孔，所述密封垫安装于所述密封槽内，所述定位装置包括用于容置待测试的扬声器单体的收容孔，所述定位装置固定于所述内表面并抵接于所述密封垫，所述收容孔对应所述出声孔设置，所述密封垫包括钢片和贴附于所述钢片表面的硅胶片，所述内表面包括支撑所述密封垫的支撑面以及自所述支撑面远离所述通孔的一侧朝远离所述外表面方向延伸的延伸面，所述延伸面与所述支撑面围成所述密封槽，所述钢片卡设于所述密封槽且所述钢片远离所述通孔的一侧与延伸面抵接。
优选的，所述硅胶片的数量为一片，且贴设于所述钢片正对所述定位装置的一侧表面。
优选的，所述硅胶片的数量为两片，且所述钢片夹设于两片所述硅胶片之间。
优选的，设置在所述钢片靠近所述定位装置一侧的所述硅胶片部分露设于所述收容孔并与所述扬声器单体对应。
优选的，所述内表面还包括自所述支撑面凹陷形成用于卡设所述硅胶片的安装槽。
优选的，所述硅胶片为粘接在所述钢片上的硫化硅胶片。
优选的，所述钢片的尺寸公差±0.01mm。
优选的，所述硅胶片的尺寸公差±0.1mm。
 有益效果
本实用新型的有益效果在于：钢片与测试障板间零间隙配合，保证了装配精度，保证测试密封；钢片双面使用，延长密封垫使用寿命。
 附图说明
图1是本实用新型扬声器单体的声学测试密封结构的立体图；
图2是本实用新型扬声器单体的声学测试密封结构的立体分解图；
图3是本实用新型扬声器单体的声学测试密封结构的剖视图；
图4是图3中A部分的放大图；
图5是本实用新型密封垫的立体结构图；
图6是本实用新型密封垫的第一实施方式的结构剖视图；
图7是本实用新型密封垫的第二实施方式的结构剖视图。
 本发明的实施方式
下面结合附图和实施方式对本实用新型作进一步详细描述。以下实施例用于说明本实用新型，但不用来限制本实用新型的范围。
请参阅图1和2所示，本实用新型提供了一种扬声器单体的声学测试密封结构100，包括测试障板1、密封垫2以及定位装置3，所述测试障板1、所述密封带2以及所述定位装置3自下向上依次叠设，待测的扬声器单体4放置于所述定位装置3内。
再结合图3和4所示，具体的，所述测试障板1为铝制加工零件，尺寸公差为±0.01mm，包括靠近所述定位装置3的内表面11以及与所述内表面11相对的外表面12，所述测试障板1贯穿开设有自所述内表面11延伸至所述外表面12的出声孔13，所述内表面11凹陷形成环绕所述出声孔13设置的密封槽14，在本实用新型的具体实施方式中，所述出声孔13为正方形孔。
再结合图5-7所示，所述密封垫2呈环状且具有对应于所述出声孔13的通孔20，所述密封带2安装于所述密封槽14内，所述密封垫2包括钢片21和贴附于所述钢片21表面的硅胶片22，具体的，所述钢片的尺寸公差±0.01mm，所述硅胶片的尺寸公差±0.1mm，所述硅胶片22为粘接在所述钢片21上的硫化硅胶片。所述钢片21卡设于所述密封槽14且所述钢片21与所述密封槽14之间的间隙为零，从而可以保证所述密封垫2与所述测试障板1的装配精度，保证测试密封。
在本实用新型的一实施方式中，所述硅胶片22的数量为一片，且贴设于所述钢片21正对所述定位装置3的一侧表面，所述定位装置3安装在所述硅胶片22上，实现密封。
在本实用新型的另一实施方式中，所述硅胶片22的数量为两片，且所述钢片21夹设于两片所述硅胶片22之间，相应的，所述测试障板1还包括用于卡设所述硅胶片22的安装槽12，从而可以增强密封性能，并且延迟所述密封垫2的使用寿命。
所述定位装置3包括用于容置待测试的扬声器单体的收容孔31，所述定位装置3抵接于所述密封垫2上且所述收容孔31对应所述出声孔13设置，这样，可以保证扬声器单体4定位后，可以与所述出声孔13正对设置。
需要进一步说明的是，设置在所述钢片21靠近所述定位装置3一侧的所述硅胶片22部分露设于所述收容孔31并与所述扬声器单体4对应。
本实用新型的有益效果在于：钢片与测试障板间零间隙配合，保证了装配精度，保证测试密封；钢片双面使用，延长密封垫使用寿命。
以上所述的仅是本实用新型的较佳实施方式，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 (8)

  1. 一种扬声器单体的声学测试密封结构，其特征在于，包括测试障板、密封垫以及定位装置，所述测试障板包括靠近所述定位装置的内表面以及与所述内表面相对的外表面，所述测试障板贯穿开设有自所述内表面延伸至所述外表面的出声孔，所述内表面凹陷形成环绕所述出声孔设置的密封槽，所述密封垫呈环状且具有对应于所述出声孔的通孔，所述密封垫安装于所述密封槽内，所述定位装置包括用于容置待测试的扬声器单体的收容孔，所述定位装置固定于所述内表面并抵接于所述密封垫，所述收容孔对应所述出声孔设置，所述密封垫包括钢片和贴附于所述钢片表面的硅胶片，所述内表面包括支撑所述密封垫的支撑面以及自所述支撑面远离所述通孔的一侧朝远离所述外表面方向延伸的延伸面，所述延伸面与所述支撑面围成所述密封槽，所述钢片卡设于所述密封槽且所述钢片远离所述通孔的一侧与延伸面抵接。
  2. 根据权利要求1所述的扬声器单体的声学测试密封结构，其特征在于，所述硅胶片的数量为一片，且贴设于所述钢片正对所述定位装置的一侧表面。
  3. 根据权利要求1所述的扬声器单体的声学测试密封结构，其特征在于，所述硅胶片的数量为两片，且所述钢片夹设于两片所述硅胶片之间。
  4. 根据权利要求2或3所述的扬声器单体的声学测试密封结构，其特征在于，设置在所述钢片靠近所述定位装置一侧的所述硅胶片部分露设于所述收容孔并与所述扬声器单体对应。
  5. 根据权利要求3所述的扬声器单体的声学测试密封结构，其特征在于，所述内表面还包括自所述支撑面凹陷形成用于卡设所述硅胶片的安装槽。
  6. 根据权利要求1所述的扬声器单体的声学测试密封结构，其特征在于，所述硅胶片为粘接在所述钢片上的硫化硅胶片。
  7. 根据权利要求1所述的扬声器单体的声学测试密封结构，其特征在于，所述钢片的尺寸公差±0.01mm。
  8. 根据权利要求6所述的扬声器单体的声学测试密封结构，其特征在于，所述硅胶片的尺寸公差±0.1mm。
PCT/CN2019/124840 2019-12-02 2019-12-12 扬声器单体的声学测试密封结构 WO2021109195A1 (zh)

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Publication number Priority date Publication date Assignee Title
WO2022077661A1 (zh) * 2020-10-16 2022-04-21 歌尔股份有限公司 螺丝锁敷组件以及扬声器

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US20130259281A1 (en) * 2010-05-05 2013-10-03 Apple Inc. Speaker clip
CN204498302U (zh) * 2015-03-31 2015-07-22 歌尔声学股份有限公司 扬声器模组
CN205992984U (zh) * 2016-08-05 2017-03-01 歌尔股份有限公司 扬声器模组
CN207968760U (zh) * 2018-01-04 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130259281A1 (en) * 2010-05-05 2013-10-03 Apple Inc. Speaker clip
CN204498302U (zh) * 2015-03-31 2015-07-22 歌尔声学股份有限公司 扬声器模组
CN205992984U (zh) * 2016-08-05 2017-03-01 歌尔股份有限公司 扬声器模组
CN207968760U (zh) * 2018-01-04 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱

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