WO2020220713A1 - 发声装置以及电子产品 - Google Patents

发声装置以及电子产品 Download PDF

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Publication number
WO2020220713A1
WO2020220713A1 PCT/CN2019/129754 CN2019129754W WO2020220713A1 WO 2020220713 A1 WO2020220713 A1 WO 2020220713A1 CN 2019129754 W CN2019129754 W CN 2019129754W WO 2020220713 A1 WO2020220713 A1 WO 2020220713A1
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WO
WIPO (PCT)
Prior art keywords
vibration
main body
sealing
cavity
outer frame
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PCT/CN2019/129754
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English (en)
French (fr)
Inventor
祖峰磊
杨鑫峰
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歌尔股份有限公司
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Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020220713A1 publication Critical patent/WO2020220713A1/zh

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    • 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
    • H04R9/025—Magnetic circuit
    • 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 present invention relates to the technical field of acoustic devices, in particular to a sound generating device and an electronic product.
  • the vibration stroke is much smaller than that of a loud-speaking device
  • the axially symmetrical direct sound method is generally not adopted, and the asymmetrical side sound method has become the mainstream;
  • Figure 1 is a schematic diagram of the sound device before the design improvement
  • the design of the sound device 100' will introduce a flexible folding ring 2'design
  • the folding ring 2' is generally reserved with two coated tapes, the outer coated tape 21' and the sound device support structure 100a' are sealed and installed, and the inner coated tape 22' is sealed and installed with the rigid area of the vibration system 1';
  • the flexible folding ring is mostly made of flexible materials, and in order to further improve the low frequency performance, a large-span folding ring structure is usually used, such as the cross-sectional span> 0.8mm, so the folding ring also partially participates in the sound radiation.
  • a large-span folding ring structure is usually used, such as the cross-sectional span> 0.8mm, so the folding ring also partially participates in the sound radiation.
  • the linear vibration stroke is small, and the larger amplitude will cause the folding ring area to be stretched, which limits the inability to push to a larger amplitude;
  • the area of the folded ring itself is large, which will significantly increase the polarization, and due to the nonlinearity of its own deformation, the acoustic radiation partly involved in the folded ring also exhibits obvious nonlinearity.
  • the main purpose of the present invention is to provide a sound generating device and an electronic product, aiming to solve the problem of providing a new sealing structure and resetting method of the vibration component, so as to eliminate the flexible folding ring, so as to correspondingly solve the technology caused by the flexible folding ring. defect.
  • the sound generating device provided by the present invention includes:
  • the shell has an installation cavity
  • the vocal unit includes a vibration component and a magnetic circuit component, and the vocal unit is arranged in the installation cavity and seals and blocks the installation cavity to form a front acoustic cavity and a rear acoustic cavity;
  • the resetting member is arranged in the housing for elastically resetting the vibration component
  • a movable seal matching structure located in the installation cavity
  • the vibration component can movably cooperate with the movable sealing matching structure, and the vibration component keeps sealingly matching with the sealing matching structure during the vibration process.
  • the restoring piece includes a centering support piece, and the centering support piece includes:
  • a plurality of elastic supporting pieces are arranged inside the outer frame of the main body, one end of the plurality of elastic supporting pieces is connected with the outer frame of the main body, and the other end is used for elastically supporting the vibration component.
  • the plurality of elastic support sheets are distributed on each side of the outer frame of the main body; and/or,
  • Each of the elastic support pieces includes a main body section and a support section.
  • One end of the main body section is connected to the inner side of the main body outer frame and extends along a side of the main body outer frame.
  • the other end of the main body section is connected, and the other end extends toward the middle of the enclosed area of the main body outer frame to elastically support the vibration component; and/or,
  • the centering support piece further includes a support inner frame, the support inner frame is provided on the inner side of the main body outer frame, and is connected to the main body outer frame through the plurality of elastic support pieces, the support inner frame and The vibration assembly is connected.
  • the vibration assembly includes a reinforcing part, and a voice coil installed on a side of the reinforcing part facing the rear acoustic cavity;
  • the connecting portion connecting the centering support piece and the vibration assembly is sandwiched between the voice coil and the reinforcing portion.
  • the movable seal matching structure includes:
  • the first sealing material is arranged in the annular groove
  • One end of the vibrating component facing the rear acoustic cavity can be movably matched with the annular groove and is sealed by the sealing material.
  • the annular groove is formed in the magnetic gap of the magnetic circuit assembly.
  • the first sealing material is magnetic fluid, silica gel, or a sealing liquid that can be confined in the annular groove; and/or,
  • the vibration assembly includes a reinforcing part and a voice coil mounted on the side of the reinforcing part facing the rear acoustic cavity, and the voice coil is matched with the annular groove.
  • the annular groove is formed in the magnetic gap of the magnetic circuit assembly.
  • the first sealing material is magnetic fluid, silica gel, or a sealing liquid that can be confined in the annular groove; and/or,
  • the vibration assembly includes a reinforcing part and a voice coil mounted on the side of the reinforcing part facing the rear acoustic cavity, and the voice coil is matched with the annular groove.
  • the movable seal matching structure includes:
  • a peripheral ring groove is provided in the housing and ringed around the periphery of the vibration component;
  • the second sealing material is arranged in the peripheral ring groove
  • the peripheral side portion of the vibration component extends into the peripheral ring groove and is movable in the peripheral ring groove, and the second sealing material is sealed with the vibration component.
  • the vibration assembly includes a reinforcing part and a voice coil mounted on a side of the reinforcing part facing the rear acoustic cavity, and a peripheral side part of the reinforcing part is matched with the peripheral ring groove; and /or,
  • the second sealing material is a sealing gel, silica gel, or a sealing liquid that can be confined in the peripheral ring groove.
  • a peripheral fixing and sealing structure is further formed in the installation cavity, and the sound-producing monomer is in a peripheral part of the vibration component and sealingly connected with the inner side wall of the housing to form the peripheral fixing and sealing structure ;and / or,
  • the central opening of the magnetic circuit assembly is provided; and/or,
  • a cavity connected to the rear acoustic cavity is provided in the housing on at least one circumference of the rear acoustic cavity.
  • the present invention also provides an electronic product, including a sounding device, the sounding device includes:
  • the shell has an installation cavity
  • the vocal unit includes a vibration component and a magnetic circuit component, the vocal unit is arranged in the installation cavity and seals and blocks the installation cavity to form a front acoustic cavity and a rear acoustic cavity;
  • the resetting member is arranged in the housing for elastically resetting the vibration component
  • a movable seal matching structure located in the installation cavity
  • the vibrating component can movably cooperate with the movable sealing mating structure, and the vibrating component keeps sealingly mating with the sealing mating structure during the vibration process.
  • the vibration component can movably cooperate with the movable sealing cooperating structure, and the vibration component keeps sealing cooperating with the sealing cooperating structure during the vibration process.
  • a resetting piece is further provided to provide resetting for the vibrating assembly, thereby eliminating the need to set a flexible folding ring to simultaneously achieve sealing at the movable installation of the vibrating assembly , And provide reset force, which can avoid the technical defects caused by the flexible folding ring.
  • Figure 1 is a schematic diagram of the sound generating device provided by the present invention before improvement
  • Figure 2 is a schematic diagram of an embodiment of a sound emitting device provided by the present invention.
  • FIG. 3 is a schematic front view of the magnetic circuit assembly in FIG. 2;
  • Figure 4 is a schematic front view of the vocal monomer in Figure 2;
  • FIG. 5 is a schematic diagram of another embodiment of the sound emitting device provided by the present invention.
  • Fig. 6 is a schematic diagram of another embodiment of the sound emitting device provided by the present invention.
  • the directional indication is only used to explain that it is in a specific posture (as shown in the drawings). If the specific posture changes, the relative positional relationship, movement, etc. of the components below will also change the directional indication accordingly.
  • the present invention provides a sound-producing device and an electronic product having the sound-producing device.
  • the electronic product can be, but is not limited to, mobile phones, televisions, computers, etc.
  • the electronic product is especially an electronic product that requires a thinner product size
  • smart phones, tablet computers, notebook computers, etc. the main improvement of the present invention lies in the improvement of the sound emitting device. The following is a detailed introduction and description of the sound emitting device provided by the invention.
  • a flexible folding ring is usually provided.
  • the flexible folding ring provides the restoring force of the vibration component, and on the other hand, the flexible folding ring also plays a role of sealing the vibration component at the movable installation position, so as to avoid the vibration component.
  • the front acoustic cavity and the rear acoustic cavity are connected at the movable installation of the vibrating component.
  • the flexible folding ring will bring a series of technical defects (described earlier, not here To repeat)
  • the present invention proposes a sound generating device, which eliminates the need for the folding ring, but also achieves sealing at the movable installation place of the vibration component, and can provide a restoring force for the vibration component.
  • 2 to 4 are schematic structural diagrams of one embodiment of the sound generating device provided by the present invention
  • FIG. 5 and FIG. 6 are schematic structural diagrams of other two embodiments of the sound generating device provided by the present invention.
  • the sounding device 100 includes a housing 1, a sounding monomer 2, a resetting member 3, and a movable sealing cooperation structure.
  • the housing 1 has a mounting cavity 1a, and specifically, in the embodiment of the present invention, the housing 1 is formed by a front housing 11 and a rear housing 12 butted and assembled. Obviously, the design is not limited to this.
  • the body 1 can also be formed in other forms.
  • the sounding monomer 2 includes a vibration component 21 and a magnetic circuit component 22.
  • the sounding monomer 2 is arranged in the installation cavity 1a and seals and blocks the installation cavity 1a to form a front sound cavity 11a and a rear sound cavity 12a, so that It is avoided that the front acoustic cavity 11a and the rear acoustic cavity 12a are connected, and the generated acoustic waves influence each other, thereby causing the phenomenon of "acoustic short circuit".
  • the resetting member 3 is provided in the housing 1 to elastically reset the vibration assembly 21.
  • the specific structure and form of the resetting member 3 are not limited, and the resetting member 3 is no longer responsible for the
  • the vibration assembly 21 has a sealing effect at the movable installation place, so the resetting member 3 can be arranged more flexibly, and the material is not subject to excessive restrictions.
  • the vibration component 21 can movably cooperate with the movable sealing mating structure, and the vibration component 21 maintains the sealing mating with the sealing mating structure during the vibration process.
  • the vibrating assembly 21 When the sounding device 100 is working, after the sounding unit 2 is supplied with an electrical signal, the vibrating assembly 21 will vibrate, because the vibrating assembly 21 is movably installed with the movable sealing cooperating structure, and It can move in the direction of vibration, and the vibration assembly 21 maintains a sealing fit with the sealing structure during the vibration process, so as to avoid the communication between the front acoustic cavity 11a and the rear acoustic cavity 12a, resulting in acoustic short-circuit, and a reset member is further provided 3 to provide reset for the vibrating component 21, so that there is no need to set a flexible folding ring to simultaneously realize the sealing at the movable installation place of the vibrating component 21, and provide a resetting force, so as to avoid the setting of flexible folding ring.
  • a reset member is further provided 3 to provide reset for the vibrating component 21, so that there is no need to set a flexible folding ring to simultaneously realize the sealing at the movable installation place of the vibrating component 21, and provide
  • the vibration assembly 21 includes a reinforcing part 211, and a voice coil 212 mounted on the side of the reinforcing part 211 facing the rear acoustic cavity 12a. After the voice coil 212 is energized, the magnetic field generated by the magnetic circuit assembly 22 In this case, the reinforcing part 211 will be driven to vibrate together.
  • the restoring member 3 includes a centering support piece 3a, and the material of the centering support piece 3a may be, but not limited to, a metal material.
  • the centering support piece 3a includes a main body outer frame 31 and a plurality of elastic supporting pieces 32.
  • the specific shape of the main body outer frame 31 is not limited. Specifically, in the embodiment of the present invention, the main body outer frame 31 Set in a square shape.
  • the plurality of elastic support sheets 32 are provided on the inner side of the main body outer frame 31, and one end of the plurality of elastic support sheets 32 is connected to the main body outer frame 31 (specifically, the plurality of elastic support sheets 32 and The main body outer frame 31 is integrally formed), and the other end elastically supports the vibration assembly 21, which can be directly connected to the vibration assembly 21, or indirectly connected to the vibration assembly 21 through other structures, and the plurality of elastic
  • the connection (direct or indirect) between the support plate 32 and the vibration assembly 21 is not limited, and will be described in detail later.
  • the centering support plate 3a provides a reset for the vibration assembly 21
  • the strength of the plurality of elastic support sheets 32 in the circumferential direction is relatively good, and they jointly limit the vibration component 21 in the circumferential direction to prevent the vibration component 21 from moving sideways, which may cause the problem of "polarization"
  • the centering support piece 3a has better elasticity, so as to better realize the elastic reset of the vibration assembly 21.
  • the plurality of elastic support sheets 32 are distributed on each side of the main body outer frame 31.
  • the elastic support sheets 32 The number is four, and four of the elastic support pieces 32 are provided on the four sides of the main body outer frame 31, so that the vibration assembly 21 is restricted in all directions in the circumferential direction of the vibration assembly 21 Position to further enhance the stability of the vibration assembly 21 in the circumferential direction.
  • each elastic support piece 32 includes a main body section 321 and a support section 322.
  • One end of the main body section 321 is connected to the inner side of the main body outer frame 31 and runs along the main body.
  • One side of the outer frame 31 extends, one end of the support section 322 is connected to the other end of the main body section 321, and the other end extends toward the middle of the enclosed area of the main body outer frame 31 to elastically support the vibration
  • the component 21 can be directly or indirectly connected to the vibration component 21, by extending the main body section 321 of the elastic support sheet 32 along the corresponding side, so that the main body section 321 has a sufficiently large length dimension Therefore, the elasticity of the elastic support sheet 32 can be improved.
  • the centering support piece 3a further includes a support inner frame (not shown), and the support inner frame is provided on the main body
  • the inner side of the outer frame 31 is connected to the main body outer frame 32 through the plurality of elastic supporting pieces 32, and the supporting inner frame is connected to the vibrating assembly 21, so that the supporting inner frame is connected to the vibrating assembly 21 connection can further improve the stability of the vibration assembly 21 in the circumferential direction.
  • the connection manner of the centering support piece 3a and the vibration assembly 21 is not limited, and it may be the connecting portion (for example, the plurality of elastic support pieces 32) connecting the centering support piece 3a and the vibration assembly 21.
  • the free end may also be the inner support frame), which is sandwiched between the voice coil 212 and the voice coil 212.
  • the elastic support piece 32 The free end is sandwiched between the voice coil 212 and the reinforcing portion 211, and the voice coil 212 and the reinforcing portion 211 are glued together to bond the elastic support piece 32 The free end is fixedly connected to the reinforcing part 211 and the voice coil 212.
  • the present design is not limited to this, and the three can also be connected in other ways.
  • the movable sealing cooperating structure provides movable cooperating installation of the vibrating component 21, and needs to maintain the sealing performance of the vibrating component 21 during the movement process.
  • the specific implementation form of the movable sealing cooperating structure is not limited.
  • the embodiments of the present invention provide two different forms of embodiments of the movable sealing cooperating structure.
  • the movable seal matching structure includes an annular groove 41 and a first sealing material 42.
  • the annular groove 41 is opened on the magnetic circuit assembly 22, and the second A sealing material 42 is arranged in the annular groove 41, and one end of the vibrating component 21 facing the rear acoustic cavity 12a can be movably matched with the annular groove 41, and is sealed by the sealing material.
  • the end of the vibrating assembly 21 facing the rear acoustic cavity 12a can be movably fitted with the annular groove 41, and a second ring groove 41 is further provided in the annular groove 41.
  • a sealing material is used to realize the sealing between the end of the vibrating component 21 facing the rear acoustic cavity 12a and the annular groove 41, and the movable sealing matching structure is realized by a simple structure.
  • the annular groove 41 is formed in the magnetic circuit gap of the magnetic circuit assembly 22.
  • the first sealing material 42 is a magnetic fluid, thereby avoiding excessive resistance caused by the first sealing material 42 to the movement of the vibration assembly 21, and the magnetic fluid can also be better.
  • the ground is confined in the annular groove 41 and is not easy to leak.
  • Other materials can also be used as the first sealing material 42, such as elastic silicone, fluid sealant, etc. .
  • the end of the voice coil 212 facing the rear acoustic cavity 12a is engaged with the annular groove 41, and the inner or outer side of the rear end of the voice coil 212 may pass through the first seal.
  • the material 42 is sealed with the annular groove 41.
  • the voice coil 212 may be sealed with the annular groove 41 through the first sealing material 42 on the inside and outside of one end of the voice coil 212 facing the rear acoustic cavity 12a.
  • the design is not limited to this Alternatively, the reinforcing portion 211 may be partially folded back, or another structure may be provided to cooperate with the annular groove 41.
  • the voice coil 212 extends into the magnetic gap, so that the power of the vibrating assembly 21 can be set sufficiently large.
  • the first A sealing material 42 is a magnetic fluid, and the first sealing material 42 can be well restricted by the magnetic circuit assembly 22 to avoid leakage from the annular groove 42.
  • the movable sealing mating structure includes a peripheral ring groove 51 and a second sealing material 52, and the peripheral ring groove 41 is provided in the
  • the housing 1 is arranged on the internal structure and around the periphery of the vibration assembly 21, specifically on the inner side wall of the housing 1, and more specifically on the inner side wall of the front shell 11.
  • the second sealing material 52 is disposed in the peripheral ring groove 51, and the peripheral side portion of the vibrating component 21 extends into the peripheral ring groove 51, and the peripheral ring groove 51 can move in the vibration direction. Movable, the second sealing material 52 is sealed with the vibration assembly 21, so that the movable sealing mating structure can be realized by another simple structure.
  • the peripheral side portion of the reinforcing portion 211 is matched with the peripheral ring groove 51.
  • the specific material of the second sealing material 52 is not limited, and may be a sealing gel, silica gel, or a sealing liquid that can be confined in the peripheral ring groove 51.
  • a peripheral fixed sealing structure 6 is also formed in the mounting cavity 1a, and the generating device is located on the outer part of the vibration assembly 21 and the inner side of the housing 1.
  • the walls are sealed and connected to form the peripheral fixed sealing structure 6.
  • the outer periphery of the magnetic circuit assembly 22 and the centering support piece 3a are jointly sealed and attached to the inner wall of the housing 1 to form the outer fixed and sealed structure 6,
  • the magnetic circuit assembly 22 may be sealed and attached to the inner wall of the housing 1 to form the peripheral fixed and sealed structure.
  • the sealing structure may not be provided with the peripheral fixed sealing structure 6.
  • the central opening of the magnetic circuit assembly 22 is provided so that the rear acoustic cavity 12a communicates with the other part of the cavity 1b of the housing 1, and then The volume of the cavity communicating with the rear acoustic cavity 12a can be increased, and the amplitude of the vibration of the rear acoustic cavity 12a can be reduced.
  • the magnetic circuit assembly 22 may not be provided with openings, as shown in FIG. 6.
  • the housing 1 is provided with a cavity 1b connected to the rear acoustic cavity 12a on at least one circumferential side of the rear acoustic cavity 12a.
  • the housing 1 is provided with the cavity 1b on both sides of the installation cavity 1a to further increase the volume of the cavity 1b communicating with the rear acoustic cavity 12a to reduce the rear acoustic cavity 12a.
  • the amplitude of the sound wave generated by the vibration is provided with a cavity 1b connected to the rear acoustic cavity 12a on at least one circumferential side of the rear acoustic cavity 12a.

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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Abstract

本发明公开一种发声装置和电子产品，所述发声装置包括壳体、发声单体、复位件和活动密封配合结构，所述壳体具有一安装腔，所述发声单体包括设置的振动组件和磁路组件，所述发声单体设于所述安装腔内且将所述安装腔密封阻隔形成前声腔和后声腔，所述复位件设于所述壳体内，用以弹性复位所述振动组件，其中，所述振动组件可活动地与所述活动密封配合结构配合，且所述振动组件在振动过程中保持与所述密封配合结构密封配合，本发明提供的发声装置可取消柔性折环，以相应地解决因为柔性折环带来的技术缺陷。

Description

发声装置以及电子产品 技术领域
本发明涉及声学装置技术领域，特别涉及一种发声装置以及电子产品。
背景技术
手机、平板电脑、手提电脑等各类电子产品，普遍使用发声装置技术作为其发声的主要手段，且随着电子产品的小型化、轻薄化的趋势，发声装置也向着更小、更薄的方向发展，由于体积小且厚度薄，现有的小发声装置有着与传统大发声装置完全不同的设计，也正因如此，其声辐射和振动方面的表现与传统大发声装置截然不同：
其一，振动行程远小于大发声装置；
其二，为适应超薄化的设计，一般不会采用轴对称的正出声方式，非对称的侧出声方式成为主流；
其三，如图1所示(图1为本设计改进之前的发声装置示意图)为避免前后声短路以及为振动系统1′提供回复力，发声装置100′设计中会引入柔性折环2′设计，该折环2′一般预留有两个涂胶带，外涂胶带21′和发声装置支撑结构100a′密封安装，内涂胶带22′与振动系统1′的刚性区域密封安装；
然而，该柔性折环多采用柔性材料制作，且为进一步提高低频性能，通常采用大跨度折环结构，比如横截跨度>0.8mm，因此折环也部分参与声辐射，正因为对柔性折环的如此要求，而导致以下的技术缺陷：
其一，由于折环材料和结构的限制，线性振动行程小，更大的振幅会导致折环区域被拉伸，从而限制不能推动到更大振幅；
其二，由于制作工艺的限制，出声非对称的声负载会让振动系统发生非对称受力，因此偏振现象比较明显；
其三，折环自身面积较大，会明显加剧偏振，且由于其自身形变的非线性，折环部分参与的声辐射也呈现明显的非线性。
发明内容
本发明的主要目的是提出一种发声装置以及电子产品，旨在解决提供一种新的振动组件的密封结构和复位方式，以取消柔性折环，以相应地解决因为柔性折环带来的技术缺陷。
为实现上述目的，本发明提出的发声装置，包括：
壳体，具有一安装腔；
发声单体，包括振动组件和磁路组件，所述发声单体设于所述安装腔内且将所述安装腔密封阻隔形成前声腔和后声腔；
复位件，设于所述壳体内，用以弹性复位所述振动组件；以及，
活动密封配合结构，位于所述安装腔内；
其中，所述振动组件可活动地与所述活动密封配合结构配合，且所述振动组件在振动过程中保持与所述密封配合结构密封配合。
可选地，所述复位件包括定心支片，所述定心支片包括：
主体外框；
多个弹性支撑片，设于所述主体外框的内侧，所述多个弹性支撑片的一端与所述主体外框连接，另一端用以弹性支撑所述振动组件。
可选地，所述多个弹性支撑片分布在所述主体外框的各侧边上；和/或，
每一所述弹性支撑片包括主体段和支撑段，所述主体段一端与所述主体外框的内侧连接，且沿着所述主体外框的一侧边延伸，所述支撑段的一端与所述主体段的另一端连接，另一端朝向所述主体外框围设区域的中部延伸，用以弹性支撑所述振动组件；和/或，
所述定心支片还包括支撑内框，所述支撑内框设于所述主体外框的内侧，且通过所述多个弹性支撑片与所述主体外框连接，所述支撑内框与所述振动组件连接。
可选地，所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔的一侧的音圈；
所述定心支片与所述振动组件连接的连接部，夹设在所述音圈和所述补强部之间。
可选地，所述活动密封配合结构包括：
环形槽，形成在所述磁路组件上；以及，
第一密封材料，设于所述环形槽内；
所述振动组件朝向所述后声腔的一端与所述环形槽活动配合而可，且被所述密封材料所密封。
可选地，所述环形槽形成在所述磁路组件的磁间隙；和/或，
所述第一密封材料为磁液、硅胶或能够限定在所述环形槽中的密封液体；和/或，
所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔一侧的音圈，所述音圈与所述环形槽配合。
可选地，所述环形槽形成在所述磁路组件的磁间隙；和/或，
所述第一密封材料为磁液、硅胶或能够限定在所述环形槽中的密封液体；和/或，
所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔一侧的音圈，所述音圈与所述环形槽配合。
可选地，所述活动密封配合结构包括：
外围环槽，设置在所述壳体内且环设在所述振动组件的外围；以及，
第二密封材料，设置在所述外围环槽中；
所述振动组件的周侧部伸入至所述外围环槽中，且在所述外围环槽可活动，所述第二密封材料与所述振动组件相密封。
可选地，所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔一侧的音圈，所述补强部的周侧部与所述外围环槽配合；和/或，
所述第二密封材料为密封胶体、硅胶或能够限定在所述外围环槽中的密封液体。
可选地，所述安装腔内还形成有外围固定密封结构，所述发声单体在所述振动组件的外围部分，与所述壳体的内侧壁密封连接，以形成所述外围固定密封结构；和/或，
所述磁路组件的中心开孔设置；和/或，
所述壳体内在所述后声腔的至少一周侧设置有连通所述后声腔设置的腔体。
本发明还提供一种电子产品，包括发声装置，所述发声装置包括：
壳体，具有一安装腔；
发声单体，包括振动组件和磁路组件，所述发声单体设于所述安装腔内且将所述安装腔密封阻隔形成前声腔和后声腔；
复位件，设于所述壳体内，用以弹性复位所述振动组件；以及，
活动密封配合结构，位于所述安装腔内；
其中，所述振动组件可活动地与所述活动密封配合结构配合，且所述振动组件在振动过程中保持与所述密封配合结构密封配合。
本发明的技术方案中，通过设置活动密封配合结构，所述振动组件可活动地与所述活动密封配合结构配合，且所述振动组件在振动过程中保持与所述密封配合结构密封配合，如此以避免前声腔和后声腔连通，而导致声短路，并且进一步设置一复位件来为所述振动组件提供复位，进而不需要通过设置柔性折环同时实现在所述振动组件的活动安装处的密封，又提供复位力，从而可以避免因为设置柔性折环带来的技术缺陷。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明提供的发声装置在改进之前的示意图；
图2为本发明提供的发声装置的一实施例的示意图；
图3为图2中的磁路组件的前视示意图；
图4为图2中的发声单体的前视示意图；
图5为本发明提供的发声装置的另一实施例的示意图；
图6为本发明提供的发声装置的又一实施例的示意图。
附图标号说明：
标号 名称 标号 名称
100 发声装置 22 磁路组件
1 壳体 3 复位件
11 前壳 3a 定心支片
12 后壳 31 主体外框
1a 安装腔 32 弹性支撑脚
11a 前声腔 321 主体段
12a 后声腔 322 支撑段
1b 腔体 41 环形槽
2 发声单体 42 第一密封材料
21 振动组件 51 外围环槽
211 补强部 52 第二密封材料
212 音圈    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，全文中出现的“和/或”的含义，包括三个并列的方案，以“A和/或B”为例，包括A方案、或B方案、或A和B同 时满足的方案。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明提供一种发声装置、以及具有所述发声装置的电子产品，所述电子产品可以但不限于手机、电视机、电脑等等，所述电子产品尤其为对于产品尺寸要求轻薄化的电子产品，例如智能手机、平板电脑、笔记本电脑等等，本发明的主要改进点在于对发声装置进行改进，以下结合对本发明提供的发声装置做详细介绍和说明。
在现有技术中，通常设置柔性折环，柔性折环一方面提供振动组件复位力，另一方面柔性折环还起到对所述振动组件在活动安装处的密封作用，以避免振动组件的前声腔和后声腔在振动组件的活动安装处连通，然而，受限于柔性折环的材质以及尺寸等等的限制，柔性折环会带来一系列的技术缺陷(前面已介绍，在此不做赘述)
鉴于此，本发明提出一种发声装置，所述发声装置取消设置折环，但同样在振动组件的活动安装处实现密封，且能够为振动组件提供复位力。图2至图4为本发明提供的发声装置的一实施例的结构示意图，图5和图6为本发明提供的发声装置的另外两个实施例的结构示意图。
请参阅图2至图4，在本发明的一实施例中，所述发声装置100包括壳体1、发声单体2、复位件3和活动密封配合结构。所述壳体1具有一安装腔1a，并且具体地，在本发明的实施例中，所述壳体1由前壳11和后壳12对接组装形成，显然本设计不限于此，所述壳体1也可以由其他形式形成。
所述发声单体2包括振动组件21和磁路组件22，所述发声单体2设于所述安装腔1a内且将所述安装腔1a密封阻隔形成前声腔11a和后声腔12a，从而可以避免所述前声腔11a和所述后声腔12a连通，进而产生的声波相互影响，以出现“声短路”的现象。
所述复位件3设于所述壳体1内，用以弹性复位所述振动组件21，所述复位件3的具体结构和形式不做限制，且所述复位件3因不再承担所述振动组件21在活动安装处的密封作用，故而所述复位件3设置可以更为灵活，材质也不在收到过多限制。
其中，所述振动组件21可活动地与所述活动密封配合结构配合，且所述振动组件21在振动过程中保持与所述密封配合结构密封配合。
所述发声装置100在工作时，所述发声单体2被加上电信号后，所述振动组件21将会振动，因为所述振动组件21通过与所述活动密封配合结构活动配合安装，而可以在振动方向上活动，且所述振动组件21在振动过程中保持与所述密封配合结构密封配合，如此以避免前声腔11a和后声腔12a连通，而导致声短路，并且进一步设置一复位件3来为所述振动组件21提供复位，进而不需要通过设置柔性折环同时实现在所述振动组件21的活动安装处的密封，又提供复位力，从而可以避免因为设置柔性折环带来的技术缺陷。
所述振动组件21包括补强部211、以及安装在所述补强部211朝向所述后声腔12a一侧的音圈212，所述音圈212在通电之后，在磁路组件22产生的磁场中，会带动所述补强部211一同振动。
在本发明的实施例中，所述复位件3包括定心支片3a，所述定心支片3a的材质可以但不限于为金属材质。所述定心支片3a包括主体外框31和多个弹性支撑片32，所述主体外框31的具体形状不做限制，具体地，在本发明的实施例中，所述主体外框31呈方形设置。所述多个弹性支撑片32设于所述主体外框31的内侧，所述多个弹性支撑片32的一端与所述主体外框31连接(具体地，所述多个弹性支撑片32与所述主体外框31一体成型)，另一端弹性支撑所述振动组件21，可以直接与所述振动组件21连接，也可以通过其他结构间接与所述振动组件21连接，并且所述多个弹性支撑片32与所述振动组件21的(直接或间接)连接方式不做限制，后续有详细说明，在本发明的实施例中，通过所述定心支片3a为所述振动组件21提供复位力，所述多个弹性支撑片32在周向上的强度较好，并且共同对所述振动组件21在周向上限位，以避免所述振动组件21侧向移动，以出现“偏振”的问题，同时所述定心支片3a具有较好的弹性，以能够较好地实现所述振动组件21的弹性复位。
进一步地，在本发明的实施例中，所述多个弹性支撑片32分布在所述主体外框31的各侧边上，具体地，在本发明的实施例中，所述弹性支撑片32设置为4个，且4个所述弹性支撑片32设置在所述主体外框31的四侧边，如此，在所述振动组件21的周向上的各个方向位对所述振动组件21进行限 位，以进一步增强所述振动组件21在周向上的稳定性。
此外，在本发明的实施例中，每一所述弹性支撑片32包括主体段321和支撑段322，所述主体段321一端与所述主体外框31的内侧连接，且沿着所述主体外框31的一侧边延伸，所述支撑段322的一端与所述主体段321的另一端连接，另一端朝向所述主体外框31围设区域的中部延伸，用以弹性支撑所述振动组件21，也即可以直接或间接与所述振动组件21连接，通过将所述弹性支撑片32的主体段321沿着对应的侧边延伸，如此使得所述主体段321具有足够大的长度尺寸，进而可以提高所述弹性支撑片32的弹性。
当所述多个弹性支撑片32间接与所述振动组件21连接时，可以是，所述定心支片3a还包括支撑内框(未图示)，所述支撑内框设于所述主体外框31的内侧，且通过所述多个弹性支撑片32与所述主体外框32连接，所述支撑内框与所述振动组件21连接，如此通过所述支撑内框与所述振动组件21连接，可以进一步提高所述振动组件21在周向上的稳定性。
所述定心支片3a与所述振动组件21的连接方式不做限制，可以是，定心支片3a与所述振动组件21连接的连接部(例如可以是所述多个弹性支撑片32的自由端，也可以是所述支撑内框)，夹设在所述音圈212和所述音圈212之间，具体地，在本发明的一实施例中，所述弹性支撑片32的自由端夹设在所述音圈212和所述补强部211之间，且所述音圈212和所述补强部211之间通过粘胶粘接，以将所述弹性支撑片32的自由端和所述补强部211以及所述音圈212固定连接，显然本设计不限于此，三者之间还可以通过其他方式连接。
所述活动密封配合结构提供所述振动组件21可活动的配合安装，并且需要保持在所述振动组件21在活动过程中的密封性，所述活动密封配合结构的具体实现形式不做限制，在本发明的实施例中提供了所述活动密封配合结构的两种不同形式的实施例。
请参阅图2，在本发明提供的一实施例中，所述活动密封配合结构包括环形槽41和第一密封材料42，所述环形槽41开设在所述磁路组件22上，所述第一密封材料42设于所述环形槽41内，所述振动组件21朝向所述后声腔12a的一端与所述环形槽41活动配合而可，且被所述密封材料所密封。通过在所述磁路组件22上设置环形槽41，以使得所述振动组件21朝向所述后声腔12a 的一端与所述环形槽41可活动地配合，进一步在所述环形槽41中设置第一密封材质，以实现对所述振动组件21朝向所述后声腔12a的一端与所述环形槽41之间的密封，进而通过简单的结构实现所述活动密封配合结构。
进一步地，在该实施例中，所述环形槽41形成在所述磁路组件22的磁路间隙中。
此外，在该实施例中，所述第一密封材料42为磁液，进而避免所述第一密封材料42对所述振动组件21活动形成的过大阻力，同时所述磁液也能够较好地被限定在所述环形槽41中，而不易外泄，当然本设计不限于此，还可以采用其他材料作为第一密封材料42，可以是弹性较好的硅胶、流体状态的密封胶等等。
此外，在本发明的实施例中，所述音圈212朝向所述后声腔12a的一端与所述环形槽41配合，可以是所述音圈212的后端内侧或外侧通过所述第一密封材料42与所述环形槽41密封，也可以所述音圈212朝向所述后声腔12a的一端内侧和外侧通过所述第一密封材料42与所述环形槽41密封，显然本设计不限于此，也可以是所述补强部211向后翻折一部分，或者，设置其他的结构来与所述环形槽41配合。
显然对于由磁间隙形成所述环形槽42的情况下，所述音圈212伸入至磁间隙，以使得可以使得所述振动组件21的功率设置得足够大，此外，此时若所述第一密封材料42为磁液，可以通过所述磁路组件22对所述第一密封材料42进行很好的限制，避免从所述环形槽42中外泄。
图4和图5为本发明提供的其他实施例中，在该其他实施例中，所述活动密封配合结构包括外围环槽51和第二密封材料52，所述外围环形槽41设置在所述壳体1的内部结构上且环设在所述振动组件21的外围，具体设置在所述壳体1的内侧壁上，更具体设置在前壳11的内侧壁上。所述第二密封材料52设置在所述外围环槽51中，所述振动组件21的周侧部伸入至所述外围环槽51中，且在所述外围环槽51在振动方向上可活动，所述第二密封材料52与所述振动组件21相密封，如此可以通过另一简单结构实现所述活动密封配合结构。具体地，在本发明的实施例中，所述补强部211的周侧部与所述外围环槽51配合。
所述第二密封材料52的具体材质不做限制，可以是密封胶体、硅胶或能够限定在所述外围环槽51中的密封液体。
在本发明的实施例中，请参阅图2，所述安装腔1a内还形成有外围固定密封结构6，所述发生装置在所述振动组件21的外围部分，与所述壳体1的内侧壁之间密封连接，以形成所述外围固定密封结构6。具体地，在本发明的实施例中，所述磁路组件22和所述定心支片3a的外围共同与所述壳体1的内壁密封贴接，以形成所述外围固定密封结构6，显然也可以是所述磁路组件22与所述壳体1的内壁密封贴接，形成所述外围固定密封结构。显然，在图5和图6提供的实施例中，所述密封结构可以不设置所述外围固定密封结构6。
在本发明的实施例中，请参阅图2和图5，所述磁路组件22的中心开孔设置，如此使得所述后声腔12a与所述壳体1的其他部分腔体1b连通，进而可以增大与所述后声腔12a连通的容腔的容积，进而可以减小后声腔12a振动产生的振幅。显然，所述磁路组件22也可不设置开孔，如图6所示。
进一步地，在本发明的实施例中，请参阅图2、图5和图6，所述壳体1内在所述后声腔12a的至少一周侧设置有连通所述后声腔12a设置的腔体1b，具体地，所述壳体1内在所述安装腔1a的两侧均设有所述腔体1b，以进一步增大与所述后声腔12a连通的腔体1b体积，以减小后声腔12a振动产生的声波的振幅。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (10)

  1. 一种发声装置，其特征在于，包括：
    壳体，具有一安装腔；
    发声单体，包括振动组件和磁路组件，所述发声单体设于所述安装腔内且将所述安装腔密封阻隔形成前声腔和后声腔；
    复位件，设于所述壳体内，用以弹性复位所述振动组件；以及，
    活动密封配合结构，位于所述安装腔内；
    其中，所述振动组件可活动地与所述活动密封配合结构配合，且所述振动组件在振动过程中保持与所述密封配合结构密封配合。
  2. 如权利要求1所述的发声装置，其特征在于，所述复位件包括定心支片，所述定心支片包括：
    主体外框；
    多个弹性支撑片，设于所述主体外框的内侧，所述多个弹性支撑片的一端与所述主体外框连接，另一端用以弹性支撑所述振动组件。
  3. 如权利要求2所述的发声装置，其特征在于，所述多个弹性支撑片分布在所述主体外框的各侧边上；和/或，
    每一所述弹性支撑片包括主体段和支撑段，所述主体段一端与所述主体外框的内侧连接，且沿着所述主体外框的一侧边延伸，所述支撑段的一端与所述主体段的另一端连接，另一端朝向所述主体外框围设区域的中部延伸，用以弹性支撑所述振动组件；和/或，
    所述定心支片还包括支撑内框，所述支撑内框设于所述主体外框的内侧，且通过所述多个弹性支撑片与所述主体外框连接，所述支撑内框与所述振动组件连接。
  4. 如权利要求2所述的发声装置，其特征在于，所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔的一侧的音圈；
    所述定心支片与所述振动组件连接的连接部，夹设在所述音圈和所述补 强部之间。
  5. 如权利要求1所述的发声装置，其特征在于，所述活动密封配合结构包括：
    环形槽，形成在所述磁路组件上；以及，
    第一密封材料，设于所述环形槽内；
    所述振动组件朝向所述后声腔的一端与所述环形槽活动配合而可，且被所述密封材料所密封。
  6. 如权利要求5所述的扬声器发声装置，其特征在于，所述环形槽形成在所述磁路组件的磁间隙；和/或，
    所述第一密封材料为磁液、硅胶或能够限定在所述环形槽中的密封液体；和/或，
    所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔一侧的音圈，所述音圈与所述环形槽配合。
  7. 如权利要求1所述的发声装置，其特征在于，所述活动密封配合结构包括：
    外围环槽，设置在所述壳体内且环设在所述振动组件的外围；以及，
    第二密封材料，设置在所述外围环槽中；
    所述振动组件的周侧部伸入至所述外围环槽中，且在所述外围环槽中可活动，所述第二密封材料与所述振动组件相密封。
  8. 如权利要求7所述的发声装置，其特征在于，所述振动组件包括补强部、以及安装在所述补强部朝向所述后声腔一侧的音圈，所述补强部的周侧部与所述外围环槽配合；和/或，
    所述第二密封材料为密封胶体、硅胶或能够限定在所述外围环槽中的密封液体。
  9. 如权利要求1所述的发声装置，其特征在于，所述安装腔内还形成有 外围固定密封结构，所述发声单体在所述振动组件的外围部分，与所述壳体的内侧壁密封连接，以形成所述外围固定密封结构；和/或，
    所述磁路组件的中心开孔设置；和/或，
    所述壳体内在所述后声腔的至少一周侧设置有连通所述后声腔设置的腔体。
  10. 一种电子产品，其特征在于，包括如权利要求如权利要求1至9任意一项所述的发声装置。
PCT/CN2019/129754 2019-04-30 2019-12-30 发声装置以及电子产品 WO2020220713A1 (zh)

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