WO2021000144A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2021000144A1
WO2021000144A1 PCT/CN2019/094044 CN2019094044W WO2021000144A1 WO 2021000144 A1 WO2021000144 A1 WO 2021000144A1 CN 2019094044 W CN2019094044 W CN 2019094044W WO 2021000144 A1 WO2021000144 A1 WO 2021000144A1
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WO
WIPO (PCT)
Prior art keywords
side wall
upper shell
sounding
wall
circumferential
Prior art date
Application number
PCT/CN2019/094044
Other languages
English (en)
French (fr)
Inventor
任璋
柳林
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
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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/CN2019/094044 priority Critical patent/WO2021000144A1/zh
Priority to CN201921033510.3U priority patent/CN210168214U/zh
Publication of WO2021000144A1 publication Critical patent/WO2021000144A1/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
    • 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 invention relates to the technical field of acoustic equipment, in particular to a sound generating device.
  • the generating device includes an upper shell 10', a lower shell 20' forming a receiving cavity 100' with the upper shell 10', and a sounding monomer 30' fixedly housed in the receiving cavity 100',
  • the cavity wall of the accommodating cavity 100' of the upper shell 10' is provided with a supporting surface 11' for supporting the sounding monomer, and a sound outlet 12' is provided in the upper shell 10'.
  • the sounding monomer 30 has a diaphragm.
  • the bracket After the sounding monomer 30' is placed, the diaphragm faces the sound outlet 12', the bracket The glue is glued between the supporting surface and the sounding monomer 30' to form a first-level seal.
  • a fixing glue is applied between the circumferential side wall 301' of the sounding monomer 30' and the cavity wall of the receiving cavity, using fixing glue
  • a second-level seal is formed, and finally the lower shell 20' and the upper shell 10' are combined and sealed by ultrasonic welding.
  • the stent glue and the fixing glue will have bubbles when they are glued. The existence of these bubbles will affect the sealing effect of the sound monomer 30', and even lead to sealing failure.
  • the object of the present invention is to provide a sounding device to eliminate the problem of air bubbles generated during the bonding of the bracket glue and the fixing glue during the assembly process of the sounding device in the prior art, which affects the sealing.
  • a sounding device includes an upper shell, a lower shell covering the upper shell and forming a containing cavity with the upper shell, and a sounding monomer contained in the containing cavity.
  • the sounding monomer has a circumferential side wall and is connected with the circumferential side wall And facing the top positioning surface of the upper shell, the upper shell has a cavity wall opposite to the sound emitting monomer, the cavity wall includes an upper shell side wall opposite to the circumferential side wall, and a plurality of supporting bosses are provided on the upper shell side wall along the circumferential direction, Each support boss extends from the side wall of the upper shell toward the direction of the sound emitting unit, and each support boss is supported on the top positioning surface.
  • An exhaust space is formed between two adjacent support bosses.
  • the circumferential side wall and the upper shell A containing gap is formed between the side walls, the exhaust space is connected with the containing gap, and the containing gap is filled with fixing glue.
  • the sounding monomer further has a bottom positioning surface disposed opposite to the top positioning surface and facing the lower casing, and the lower casing abuts against the top and bottom positioning surface to clamp the sounding monomer between the supporting boss and the lower casing.
  • the accommodating cavity is a rectangular space adapted to the circumferential profile of the sounding monomer
  • the side wall of the upper shell includes two opposite long axis side walls and two opposite short axis side side walls, each of the long axis sides
  • At least two support bosses are provided on the side wall and each minor axis side wall, and the two sides of the bisecting point of the major axis side side wall and the minor axis side side wall are equipped with support bosses.
  • one of the side walls of the long axis is provided with a sound outlet, and the exhaust space is communicated with the sound outlet.
  • the two sides of the bisecting point of the side wall of the long axis side and the side wall of the short axis side are symmetrically provided with support bosses relative to the bisecting point.
  • two supporting bosses are provided on each side wall of the long axis side and each side wall of the short axis side.
  • the fixing glue is filled in the containing gap formed between the circumferential side wall of the sounding monomer and the side wall of the upper shell, and the fixing glue is squeezed during the process of covering the upper and lower shells. Pressure, the bubbles generated in the fixing glue are also squeezed, and because the exhaust space is formed between two adjacent support bosses, the bubbles are squeezed and the gas is discharged into the exhaust space, so that the fixing glue can A compact and effective sealing effect is achieved, and when the fixing glue dries and solidifies, the circumferential side wall and the upper shell side wall are fixedly connected together.
  • Figure 1 is an exploded view of the current technology sound generating device
  • FIG. 2 is a schematic diagram of the assembly structure of the sound device of the present invention from a first perspective
  • Figure 3 is an exploded view of Figure 2;
  • Figure 4 is a cross-sectional view in the direction of A-A in Figure 2;
  • Figure 5 is an axonometric view of Figure 4.
  • Figure 6 is an enlarged view of B in Figure 5;
  • FIG. 7 is a schematic diagram of the assembly structure of the generating device of the present invention from a second perspective
  • Figure 8 is an enlarged view of C in Figure 7;
  • FIG. 9 is a schematic diagram of the assembly structure of the sound emitting unit of the sound emitting device of the present invention.
  • the sound emitting device provided by the present invention includes an upper shell 10, a lower shell 20 that covers the upper shell 10 and forms a receiving cavity 100 with the upper shell 10, and a sounding monomer accommodated in the receiving cavity 100 30.
  • the sounding monomer 30 has a circumferential side wall 301 and a top positioning surface 302 connected to the circumferential side wall 301 and facing the upper shell 10.
  • the upper shell 10 has a cavity wall 103 opposite to the sounding monomer 30, and the cavity wall 103 Including the upper shell side wall 1031 opposite to the circumferential side wall 301, the upper shell side wall 1031 is provided with a plurality of supporting bosses 11 along the circumferential direction, and each supporting boss 11 extends from the upper shell side wall 1031 toward the direction of the sound emitting unit 30 Each supporting boss 11 is supported against the top positioning surface 302, an exhaust space 13 is formed between two adjacent supporting bosses 11, and an accommodation gap 14 is formed between the circumferential side wall 301 and the upper shell side wall 1031. The air space 13 communicates with the containing gap 14, and the containing gap 14 is filled with a fixing glue 50.
  • the lower housing 20 is placed stably, and then the sounding monomer 30 is placed on the lower housing 20, where the sounding monomer 30 needs to be placed on the circumferential side of the sounding monomer 30 before placing the sounding unit 30.
  • the wall 301 is coated with a fixing glue 50.
  • the fixing glue 50 is filled in the containing gap 14 formed between the circumferential side wall 301 of the sounding monomer 30 and the upper shell side wall 1031.
  • the middle fixing glue 50 is squeezed, so that the bubbles generated in the fixing glue 50 are also squeezed, and because the exhaust space 13 is formed between the two adjacent support bosses 11, the bubbles are squeezed and the gas is discharged to the exhaust In the air space 13 (a part of the glue is squeezed and overflowed into the exhaust space 13 when the fixing glue 50 is squeezed), so that the fixing glue 50 can achieve a compact and effective sealing effect after the fixing glue 50 is glued and solidified. And when the fixing glue dries and solidifies, the circumferential side wall and the upper shell side wall are fixedly connected together.
  • the sound generating device of the present invention compared with the sound generating device of the present technology, the sound generating device of the present invention eliminates the supporting surface 11', so that the bracket glue is not needed when assembling the sound generating device of the present invention, which reduces the assembly steps and makes the assembly process Simplified, thereby improving assembly efficiency.
  • the sound emitting unit 30 of the sound emitting device also has a bottom positioning surface 303 disposed opposite to the top positioning surface 302 and facing the lower shell 20.
  • the bottom positioning surface 303 is provided with the sound emitting unit 30 At the four corner positions on the side of the lower shell 20, the lower shell abuts the bottom positioning surface 303, so that the sound emitting unit 30 can be clamped between the supporting boss 11 and the lower shell 20.
  • the positioning fixing glue 60 is coated on the bottom positioning surface 303 of the sounding monomer 30.
  • the bottom positioning surface 303 of the sounding monomer 30 and the lower housing 20 pass between The positioning and fixing glue 60 is bonded and connected, and after the positioning and fixing glue 60 dries and solidifies, the vocal monomer 30 and the lower shell 20 are fixed.
  • the accommodating cavity 100 is a rectangular space adapted to the circumferential profile of the sounding monomer 30, and the upper shell side wall 1031 includes two opposite long axis side walls 101 and two opposite short axis sides. At least two supporting bosses 11 are provided on the side walls 102, each of the long axis side walls 101 and each of the short axis side side walls 102, and the bisecting point of the long axis side side wall 101 and the short axis side side wall 102 Supporting bosses 11 are provided on both sides.
  • each support boss 11 supports the sound emitting unit 30, and regardless of the positions of the long axis side wall 101 and the short axis side wall 102, they can be distributed at their corresponding bisecting points.
  • the supporting bosses 11 on both sides form an effective and stable support, which avoids the deflection of the sounding unit 30 due to the unreasonable distribution of the supporting bosses 11.
  • one of the long axis side walls 101 is provided with a sound outlet 12, and the sound-producing monomer 30 is provided with a diaphragm 321 on the side facing the sound outlet 12.
  • the top The positioning surface 302 is the edge side surface of the diaphragm 321 away from the lower casing 20.
  • the exhaust space 13 communicates with the sound outlet 12, that is, the exhaust space 13 communicates with the external environment through the sound outlet 12.
  • each long-axis side wall 101 and each short-axis side wall 102 are provided with two support bosses 11, which is the most simplified design, which reduces the cost while ensuring the stability of the sounding monomer 30. lowest.
  • the sounding unit 30 in the sounding device of the present invention includes a basin frame 31 with a receiving space, a magnetic circuit system 33 assembled in the receiving space, and one end fixedly connected to the basin frame 31 and the other end inserted into the receiving space
  • the vibration system 32 generates magnetic induction with the magnetic circuit system 33.
  • the vibration system 32 vibrates and produces sound due to the magnetic induction with the magnetic circuit system 33.
  • the vibration system 32 includes a diaphragm 321 that vibrates and produces sound.

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  • 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

一种发声装置，包括上壳(10)，盖合于上壳(10)且与上壳(10)形成收容腔(100)的下壳(20)以及收容于收容腔(100)内的发声单体(30)，发声单体(30)具有周向侧壁(301)以及与周向侧壁(301)相连接且朝向上壳(10)的顶部定位面(302)，上壳(10)具有与发声单体(30)相对的腔壁(103)，腔壁(103)包括与周向侧壁(301)相对的上壳侧壁(1031)，上壳侧壁(1031)上沿周向设有多个支撑凸台(11)，各支撑凸台(11)自上壳侧壁(1031)朝向发声单体(30)的方向延伸，各支撑凸台(11)抵顶支撑于顶部定位面(302)，相邻两个支撑凸台(11)之间形成排气空间(13)，周向侧壁(301)与上壳侧壁(1031)之间形成容纳间隙(14)，排气空间(13)与容纳间隙(14)相连通，且该容纳间隙(14)中充满有固定胶(50)。应用该装置能够消除目前技术中发声装置在装配过程中支架胶和固定胶(50)在胶合时产生气泡而影响密封的问题。

Description

发声装置 技术领域
本发明涉及声学设备技术领域，尤其涉及一种发声装置。
 背景技术
在目前技术中，如图1所示，发生装置包括上壳10＇、与上壳10＇形成收容腔100＇的下壳20＇以及固定收容于收容腔100＇内的发声单体30＇，其中，上壳10＇的收容腔100＇的腔壁设有用于支撑发声单体的支撑面11＇，并且在上壳10＇开设出音口12＇。在装配过程中，首先在支撑面上打上支架胶，然后放上发声单体30＇，发声单体30具有振膜，放置好发声单体30＇后使振膜朝向出音口12＇，支架胶在支撑面与发声单体30＇之间胶合后形成第一级密封，此时发声单体30＇的周向侧壁301＇与收容腔的腔壁之间打了固定胶，利用固定胶胶合后形成第二级密封，最后将下壳20＇与上壳10＇盖合并进行超声焊密封连接。但是，在生产过程中，支架胶和固定胶在胶合时候均会有气泡产生，这些气泡的存在会影响对于发声单体30＇的密封效果，甚至导致密封失效。
因此，有必要提供一种具有新结构设计的发声装置，以消除支架胶和固定胶在胶合时候产生气泡而影响密封的问题。
 技术问题
本发明的目的在于提供一种发声装置，以消除目前技术中发声装置在装配过程中支架胶和固定胶在胶合时候产生气泡而影响密封的问题。
 技术解决方案
本发明的技术方案如下：
一种发声装置，包括上壳、盖合于上壳且与上壳形成收容腔的下壳以及收容于收容腔内的发声单体，发声单体具有周向侧壁以及与周向侧壁连接且朝向上壳的顶部定位面，上壳具有与发声单体相对的腔壁，腔壁包括与周向侧壁相对的上壳侧壁，上壳侧壁上沿周向设有多个支撑凸台，各支撑凸台自上壳侧壁朝向发声单体的方向延伸，各支撑凸台抵顶支撑于顶部定位面，相邻两个支撑凸台之间形成排气空间，周向侧壁与上壳侧壁之间形成容纳间隙，排气空间与容纳间隙相连通，且容纳间隙充满有固定胶。
进一步地，发声单体还具有与顶部定位面相对设置且朝向下壳的底部定位面，下壳抵顶底部定位面以将发声单体夹紧于支撑凸台与下壳之间。
进一步地，收容腔为与发声单体的周向轮廓相适配的矩形空间，上壳侧壁包括相对的两个长轴边侧壁与相对的两个短轴边侧壁，各长轴边侧壁与各短轴边侧壁上均设有至少两个支撑凸台，且长轴边侧壁与短轴边侧壁的二等分点两侧均设有支撑凸台。
进一步地，其中一个长轴边侧壁设有出音口，排气空间与出音口相连通。
进一步地，长轴边侧壁与短轴边侧壁的二等分点两侧相对于该二等分点对称地设置支撑凸台。
进一步地，各长轴边侧壁与各短轴边侧壁上均设有两个支撑凸台。
 有益效果
本发明的有益效果在于：
在装配本发明的发声装置过程中，固定胶填充于发声单体的周向侧壁与上壳侧壁之间形成的容纳间隙中，在盖合上壳与下壳的过程中固定胶被挤压，使得固定胶中产生的气泡也被挤压，而由于相邻两个支撑凸台之间形成了排气空间，使得气泡被挤压而排出气体至排气空间中，从而使得固定胶能够达到致密有效的密封效果，并且当固定胶干涸固化之后周向侧壁与上壳侧壁之间被固定连接在一起。
 附图说明
图1为目前技术的发声装置的分解图；
图2为本发明的发声装置的第一视角的装配结构的示意图；
图3为图2的分解图；
图4为图2中A-A方向的剖视图；
图5为图4的轴测图；
图6为图5中B处放大图；
图7为本发明的发生装置的第二视角的装配结构的示意图；
图8为图7中C处放大图；
图9为本发明的发声装置的发声单体的装配结构的示意图。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为“连接于”另一个元件，它可以是直接连接到另一个元件或者间接连接至该另一个元件上。
还需要说明的是，本实施例中的左、右、上、下等方位用语，仅是互为相对概念或是以产品的正常使用状态为参考的，而不应该认为是具有限制性的。
下面结合附图和实施方式对本发明作进一步说明。
如图2至图9所示，本发明提供的发声装置包括上壳10、盖合于上壳10且与上壳10形成收容腔100的下壳20以及收容于收容腔100内的发声单体30，发声单体30具有周向侧壁301以及与周向侧壁301相连接且朝向上壳10的顶部定位面302，上壳10具有与发声单体30相对的腔壁103，腔壁103包括与周向侧壁301相对的上壳侧壁1031，上壳侧壁1031上沿周向设有多个支撑凸台11，各支撑凸台11自上壳侧壁1031朝向发声单体30的方向延伸，各个支撑凸台11抵顶支撑于顶部定位面302，相邻两个支撑凸台11之间形成排气空间13，周向侧壁301与上壳侧壁1031之间形成容纳间隙14，排气空间13与容纳间隙14相连通，且该容纳间隙14中充满有固定胶50。
在装配该发声装置的过程中，首先将下壳20放置稳定，然后将发声单体30放置在位于下壳20上，其中，在放置发声单体30之前需在发声单体30的周向侧壁301上涂覆上固定胶50，当发声单体30在下壳20上放置稳定之后，再将上壳10盖合与下壳20之上，并使得支撑凸台11抵顶住发声单体30的顶部定位面302，此时固定胶50充满于发声单体30的周向侧壁301与上壳侧壁1031之间形成的容纳间隙14中，在盖合上壳10与下壳20的过程中固定胶50被挤压，使得固定胶50中产生的气泡也被挤压，而由于相邻两个支撑凸台11之间形成了排气空间13，使得气泡被挤压而排出气体至排气空间13中（固定胶50在被挤压的过程会有一部分胶水被挤压溢流进排气空间13），从而在固定胶50胶合固化之后使得固定胶50能够达到致密有效的密封效果，并且当固定胶干涸固化之后周向侧壁与上壳侧壁之间被固定连接在一起。
在本发明中，相对于目前技术的发声装置而言，本发明的发声装置取消了支撑面11＇，从而在装配本发明的发声装置时候不需要涂覆支架胶，减少了装配步骤使得装配过程得到简化，从而提高了装配效率。
如图3所示，该发声装置的发声单体30还具有与顶部定位面302相对设置且朝向下壳20的底部定位面303，具体地，底部定位面面303为设置与发声单体30的朝向下壳20一侧的四个转角位置处，下壳抵顶该底部定位面303，这样就可以将发声单体30夹紧于支撑凸台11与下壳20之间。在发声单体30的底部定位面303上涂覆上定位固定胶60，在将发声单体30放置在下壳20上之后，此时发声单体30的底部定位面303与下壳20之间通过定位固定胶60粘接连接，待定位固定胶60干涸固化后使得发声单体30与下壳20之间固定。
如图3所示，收容腔100为与发声单体30的周向轮廓相适配的矩形空间，上壳侧壁1031包括相对的两个长轴边侧壁101与相对的两个短轴边侧壁102，各长轴边侧壁101与各短轴边侧壁102上均设有至少两个支撑凸台11，且长轴边侧壁101与短轴边侧壁102的二等分点两侧均设有支撑凸台11。如此，在装配过程中，各个支撑凸台11支撑住发声单体30，并且，无论长轴边侧壁101与短轴边侧壁102的位置处均能够通过分布在各自对应的二等分点两侧的支撑凸台11形成有效稳定的支撑，避免了由于支撑凸台11分布不合理而导致发声单体30出现偏摆的情况。
具体地，如图7和图8所示，其中一个长轴边侧壁101上设有出音口12，发声单体30朝向出音口12的一侧设置了振膜321，实际上，顶部定位面302即为振膜321的远离下壳20一侧的边缘侧面。排气空间13与出音口12相连通，即排气空间13通过出音口12与外部环境相连通。这样，当固定胶50中产生的气泡被挤压而溢出排放气体至排气空间13时候，气泡中的气体能够通过排气空间13、出音口12直接排出到外部环境，如此就不存在当排气空间与振膜321上的顶部定位面302之间形成密闭空间后气泡中的气体无法溢出排放的问题，保证气泡中气体被完全挤压排出。
在本发明的发声装置中，如图3所示，长轴边侧壁101与短轴边侧壁102的二等分点两侧相对于该二等分点对称地设置支撑凸台11，这种相对于长轴边侧壁101、短轴边侧壁102各自二等分点进行对称设计支撑凸台11的设计方式能够简化设计难度，并且降低对上壳10的注塑模具进行开模的难度，大大降低开模成本而降低生产成本。具体地，各长轴边侧壁101与各短轴边侧壁102上均设有两个支撑凸台11，如此为最简化设计，在保证对发声单体30支撑稳定的同时将成本降至最低。
如图7所示，本发明的发声装置中的发声单体30包括具有收容空间的盆架31、装配于收容空间的磁路系统33、以及一端固定连接于盆架31另一端插入收容空间内与磁路系统33之间产生磁感应作用的振动系统32，振动系统32由于与磁路系统33之间产生磁感应作用而进行振动发声，其中，振动系统32包括进行振动发声的振膜321。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (6)

  1. 一种发声装置，包括上壳、盖合于所述上壳且与所述上壳形成收容腔的下壳以及收容于所述收容腔内的发声单体，所述发声单体具有周向侧壁以及与所述周向侧壁相连接且朝向所述上壳的顶部定位面，其特征在于：所述上壳具有与所述发声单体相对的腔壁，所述腔壁包括与所述周向侧壁相对的上壳侧壁，所述上壳侧壁上沿周向设有多个支撑凸台，各所述支撑凸台自所述上壳侧壁朝向所述发声单体的方向延伸，各所述支撑凸台抵顶支撑于所述顶部定位面，相邻两个所述支撑凸台之间形成排气空间，所述周向侧壁与所述上壳侧壁之间形成容纳间隙，所述排气空间与所述容纳间隙相连通，且该容纳间隙中充满有固定胶。
  2. 根据权利要求1所述的发声装置，其特征在于，所述发声单体还具有与所述顶部定位面相对设置且朝向所述下壳的底部定位面，所述下壳抵顶所述底部定位面以将所述发声单体夹紧于所述支撑凸台与所述下壳之间。
  3. 根据权利要求1所述的发声装置，其特征在于：所述收容腔为与所述发声单体的周向轮廓相适配的矩形空间，所述上壳侧壁包括相对的两个长轴边侧壁与相对的两个短轴边侧壁，各所述长轴边侧壁与各所述短轴边侧壁上均设有至少两个所述支撑凸台，且所述长轴边侧壁与所述短轴边侧壁的二等分点两侧均设有所述支撑凸台。
  4. 根据权利要求1所述的发声装置，其特征在于：其中一个所述长轴边侧壁设有出音口，所述排气空间与所述出音口相连通。
  5. 根据权利要求3所述的发声装置，其特征在于：所述长轴边侧壁与所述短轴边侧壁的二等分点两侧相对于该二等分点对称地设置所述支撑凸台。
  6. 根据权利要求5所述的发声装置，其特征在于：各所述长轴边侧壁与各所述短轴边侧壁上均设有两个所述支撑凸台。
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