WO2021031476A1 - 声学装置及电子设备 - Google Patents
声学装置及电子设备 Download PDFInfo
- Publication number
- WO2021031476A1 WO2021031476A1 PCT/CN2019/126127 CN2019126127W WO2021031476A1 WO 2021031476 A1 WO2021031476 A1 WO 2021031476A1 CN 2019126127 W CN2019126127 W CN 2019126127W WO 2021031476 A1 WO2021031476 A1 WO 2021031476A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sealed cavity
- acoustic device
- housing
- cavity
- groove
- Prior art date
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Classifications
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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
- H04R9/06—Loudspeakers
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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
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Definitions
- the present invention relates to the technical field of acoustics, in particular to an acoustic device and an electronic device equipped with the acoustic device.
- the acoustic system of the traditional structure includes a closed box and a sounding unit arranged on the closed box. A cavity is formed between the closed box and the sounding unit.
- the size of the acoustic device is reduced, the thickness is thinner, and the volume of the acoustic device matched with it is getting smaller and smaller, but consumers have higher and higher requirements for the performance of the product, especially the bass effect of the sound.
- the volume of the chamber in the acoustic system is also limited due to the volume limitation, and it is difficult for this type of acoustic system to achieve satisfactory bass reproduction.
- One current approach is to install a flexible membrane on the housing of the acoustic system. During use or assembly, the flexible membrane is likely to come into contact with other components and cause damage to the flexible membrane, thereby affecting product performance.
- the main purpose of the present invention is to provide an acoustic device and electronic equipment, which aims to solve the technical problem that the flexible deformable part of the acoustic device is easily damaged during use or assembly.
- an acoustic device provided by the present invention includes:
- a sounding unit the sounding unit includes a vibrating diaphragm, the acoustic device is provided with a sound hole, the sound wave on the front side of the vibrating diaphragm is radiated to the outside through the sound hole; the rear side of the vibrating diaphragm forms a A sealed cavity, the cavity wall of the first sealed cavity is a first shell, the first shell is recessed in the direction of the first sealed cavity to form an installation groove, and the groove bottom of the installation groove is provided with
- the mounting hole is provided with a second sealed cavity outside the first sealed cavity, the flexible deformation component is located between the first sealed cavity and the second sealed cavity, and the second sealed cavity connects the The sound wave generated by the flexible deformation portion during deformation is enclosed in the second sealed cavity; the groove bottom and the plane of the installation groove are at an acute angle, and the groove bottom is provided with a flexible deformation covering the installation hole
- the flexible deformable assembly includes a flexible deformable portion and a protective device combined together, the protective device includes a
- a side wall of the installation groove is provided with an exhaust groove connecting the inside of the installation groove and the second sealed cavity.
- a side wall of the installation groove is recessed in a direction away from the flexible deformation component to form a glue injection groove.
- the flexible deformable component does not exceed the plane where the notch of the installation slot is located.
- it further includes a dust-proof net, the dust-proof net is arranged in the installation groove, and the flexible deformable component is located in a space enclosed by the dust-proof net and the first housing.
- the dust-proof net is a mesh cloth.
- the protective device is a steel mesh.
- the volume of the second sealed cavity is greater than the volume of the first sealed cavity; at least a part of the housing of the electronic device for installing the acoustic device is used to form the first sealed cavity and/or the first sealed cavity Two airtight cavity.
- the first housing includes an upper housing and a lower housing
- the magnetic circuit system of the sound unit includes a magnetic yoke
- the mounting hole is provided in the upper housing
- the flexible deformation component is mounted on the The mounting hole
- the lower shell is provided with an opening
- the magnetic conductive yoke is embedded in the opening.
- the present invention provides an electronic device, which includes a housing of the electronic device and the foregoing acoustic device.
- the technical effect of the present invention is at least that the cavity wall of the first airtight cavity of the acoustic device is recessed in the direction of the first airtight cavity to form an installation groove, the groove bottom of the installation groove is provided with an installation hole, and the groove bottom is connected to the installation groove.
- the plane of the notch is at an acute angle, and the bottom of the groove is provided with a flexible deformable component covering the mounting hole.
- the flexible deformable component includes a flexible deformable part and a protective device that are combined together.
- the protective device includes a fixed part, a bottom, a connecting fixed part, and a side part of the bottom.
- the side part is arranged on the periphery of the bottom, one end of the side part in the axial direction is combined and fixed with the bottom part, the fixed part is arranged on the outer periphery of the other end of the side part in the axial direction, and the bottom and the side parts form a cover corresponding to the flexible deformation part.
- the fixing part is installed on the first housing, and a communication hole is provided on the bottom. In this way, the flexible deformable part is covered with a protective device to protect the flexible deformable part from damage and destruction.
- Figure 1 is a cross-sectional view of an embodiment of the acoustic device of the present invention
- Figure 2 is an exploded view of another embodiment of the acoustic device of the present invention.
- Figure 3 is a top view of another embodiment of the acoustic device of the present invention with the dust-proof net removed;
- Figure 4 is a cross-sectional view of another embodiment of the acoustic device of the present invention.
- FIG. 5 is a schematic diagram of the assembly structure of the upper shell and the flexible deformation component in another embodiment of the acoustic device of the present invention.
- FIG. 6 is a schematic diagram of the assembly structure of the upper shell and the protective device in another embodiment of the acoustic device of the present invention.
- FIG. 7 is a schematic diagram of the assembly structure of the lower shell and the sound unit in another embodiment of the acoustic device of the present invention.
- Fig. 8 is a structural schematic diagram of the steel mesh in an embodiment of the acoustic device of the present invention.
- FIG. 9 is a schematic diagram of the structure of the diaphragm in an embodiment of the acoustic device of the present invention.
- Figure 10 is a cross-sectional view of a flexible deformable component in an embodiment of the acoustic device of the present invention.
- 1 is a flexible deformable component
- 11 is a steel mesh
- 111 is a bottom part
- 112 is a side part
- 113 is a fixed part
- 114 is a connecting hole
- 12 is a diaphragm
- 121 is a joint part
- 122 is a folding ring
- 123 is a central part.
- 124 is the reinforcing part
- 2 is the first shell
- 21 is the upper shell
- 211 is the mounting hole
- 212 is the sound hole
- 214 is the mounting groove
- 215 is the glue injection groove
- 216 is the exhaust groove
- 22 is the lower housing 221 is an opening
- 23 is a pressure equalizing hole
- 3 is a sound unit
- 31 is a magnetic yoke
- 4 is an FPC
- 5 is a second housing
- 6 is a first sealed cavity
- 7 is a second sealed cavity.
- the present invention provides an acoustic device for sound generation on electronic equipment.
- the acoustic device includes a sounding unit 3, as shown in Figs. 1-3, wherein the sounding unit 3 is a miniature sounding unit 3, more specifically, the sounding unit 3 is a miniature moving coil speaker.
- the sound unit 3 generally includes a housing and a vibration system and a magnetic circuit system accommodating and fixed in the housing.
- the vibration system includes a vibration diaphragm fixed on the housing and a voice coil combined with the vibration diaphragm.
- the magnetic circuit system forms There is a magnetic gap, and the voice coil is arranged in the magnetic gap. The voice coil reciprocates up and down in the magnetic field after the alternating current is applied, thereby driving the vibrating diaphragm to vibrate and produce sound.
- the acoustic device of the present invention includes a first housing 2.
- the first housing 2 is divided into an upper housing 21 and a lower housing 22.
- the upper housing 21 and the lower housing 22 are enclosed to form a cavity.
- the sound unit 3 is arranged in the cavity to emit sound. Unit 3 realizes circuit conduction with an external circuit through FPC4.
- the acoustic device is provided with a sound hole 212.
- the upper shell 21 is provided with a sound hole 212.
- the sound wave on the front side of the vibrating diaphragm is radiated through the sound hole 212, and the sound wave on the back side of the vibrating diaphragm is retained. Inside the acoustic device.
- a cavity is formed between the vibrating diaphragm and the casing and the magnetic circuit system.
- a rear sound hole is opened on the casing or the magnetic circuit system or between the two.
- the sound waves on the rear side of the vibrating diaphragm will enter through the rear sound hole.
- rear sound holes are opened in the four corners of the sound unit 3.
- the vibration direction of the vibration diaphragm of the sound generating unit 3 of the present invention is parallel to the thickness direction of the acoustic device, which is beneficial to the thin design of the acoustic device.
- the lower shell 22 of the acoustic device is provided with an opening 221 at a position corresponding to the sounding unit 3.
- the shape and size of the opening 221 are adapted to the sounding unit 3.
- the magnetic circuit system of the sounding unit 3 includes The magnetically conductive yoke 31 is embedded in the opening 221, showing that the magnetically conductive yoke 31 is exposed to the acoustic device.
- a first sealed cavity 6 is formed on the back side of the vibrating diaphragm, and a mounting hole 211 is opened on the cavity wall of the first sealed cavity 6.
- the shape of the mounting hole 211 can be circular, rectangular, square, elliptical, diamond or Irregular patterns, the present invention does not limit this.
- the shape of the mounting hole 211 is rectangular.
- the cavity wall of the first closed cavity 6 is the first housing 2.
- the first housing 2 is recessed in the direction of the first airtight cavity 6 to form a mounting groove 214, and a mounting hole 211 is opened on the bottom of the mounting groove 214.
- the plane of the notch 214 is at an acute angle, and the bottom of the mounting groove 214 is provided with a flexible deformable component 1 covering the mounting hole 211.
- the shape of the flexible deformable component 1 matches the shape of the mounting hole 211.
- a second sealed cavity 7 is provided outside the first sealed cavity 6, and the flexible deformation assembly 1 is located between the first sealed cavity 6 and the second sealed cavity 7.
- the groove bottom is at an acute angle with the plane of the notch of the mounting groove 214, so that the flexible deformable component 1 installed on the bottom of the mounting groove 214 is also at an acute angle with the plane of the notch of the mounting groove 214 as a whole, that is, the flexible deformable component 1 Compared with the other end, there is a height difference in the vertical direction at one end, and one end is farther away from the notch of the mounting groove 214 than the other end, even if the components of the electronic device are in contact with the first housing 2 or flexible deformation On the component 1, a gap is left between the end of the flexible deformable component 1 that is farther from the notch of the mounting groove 214 and the component of the electronic device.
- the present invention does not limit the size of the acute angle between the groove bottom and the plane of the notch of the installation groove 214, which can be set according to actual requirements. Further, the flexible deformable component 1 does not exceed the plane where the notch of the installation groove 214 is located, so that the probability of contact or even scratching of the external component with the flexible deformable component 1 is effectively reduced.
- the flexible deformable component 1 includes a flexible deformable portion and a protective device that are combined together.
- the flexible deformable portion and the protective device are fixedly combined by adhesive, and the flexible deformable portion is combined with the protective device by adhesive.
- the protective device is made of hard material, which can be metal, plastic, etc.
- the protective device is a steel mesh 11, which can reduce the overall thickness based on the design of the steel mesh 11, which is beneficial to reduce the thickness of the acoustic device. The following description takes the steel mesh 11 as an example.
- the flexible deformable portion is the diaphragm 12, the diaphragm 12 includes a coupling portion 121, a folding ring 122, a central portion 123, and a reinforcing portion 124.
- the coupling portion 121 is used to fix the diaphragm 12, and the coupling portion 121 is clamped in Between the bottom of the mounting groove 214 and the fixing portion 113, the central portion 123 is elastically suspended from the coupling portion 121 by a folding ring 122, and a reinforcing portion 124 is provided on the central portion 123 for structural strength of the central portion 123.
- the reinforcing part 124 is provided on the side of the central part 123 away from the bottom 111 to avoid occupying the space between the flexible deformable part and the steel mesh 11 to ensure the vibration space of the flexible deformable part.
- the folding ring 122 protrudes toward the steel mesh 11 to reduce the thickness of the flexible deformation component 1.
- the central portion 123 is an integral structure or the central position of the central portion 123 is hollowed out.
- the strength of the reinforcing portion 124 is higher than the strength of the central portion 123, and may be metal, plastic, carbon fiber, or a composite structure thereof. The following uses the diaphragm 12 as an example for description.
- the vibrating diaphragm When the acoustic device is in working condition, when the vibrating diaphragm vibrates and compresses the volume of the rear side of the vibrating diaphragm toward the first sealed cavity 6, the sound pressure will be transmitted to the diaphragm 12 through the first sealed cavity 6, and the diaphragm 12 will face the first sealed cavity 6.
- the outer side of the housing 2 expands and deforms; on the contrary, when the vibrating diaphragm vibrates away from the first sealed cavity 6, the diaphragm 12 shrinks and deforms inwardly, thereby adjusting the volume of the first sealed cavity 6.
- the diaphragm 12 can be a single-layer structure made of a layer of thermoplastic elastomer material or a multilayer composite structure of at least one layer of thermoplastic elastomer material.
- the thermoplastic elastomer material includes polyester, polyurethane, At least one of polyamide, polystyrene, polyolefin, dynamic vulcanized rubber, and blend type thermoplastic. Since the thermoplastic elastomer material has a certain degree of flexibility, it is easy to deform when affected by vibration, so that the diaphragm 12 can adjust the first closed cavity 6.
- the material of the diaphragm 12 is not limited to the above materials, it may also be some materials such as plastic, silicone, rubber, etc. that can achieve flexible deformation.
- the steel mesh 11 includes a fixed portion 113, a bottom portion 111, and a side portion 112.
- the side portion 112 is provided on the periphery of the bottom portion 111. One end of the side portion 112 in the axial direction is combined and fixed with the bottom portion 111.
- the fixed portion 113 is provided on the side portion 112 along the axial direction.
- the bottom 111 and the side 112 form a cover corresponding to the diaphragm 12 and are mounted on the first housing 2 through the fixing part 113.
- the steel mesh 11 can be generally regarded as a basin, and the fixing part 113 is For "bowl edge", the bottom 111 is the “basin”, and the side 112 is the "bowl wall”.
- the fixing portion 113 is connected and fixed to the diaphragm 12, the diaphragm 12 is connected and fixed to the bottom of the mounting groove 214, and the side portion 112 and the bottom 111 can form part of the vibration space of the diaphragm 12.
- the distance between the bottom 111 and the diaphragm 12 is set so that the diaphragm 12 will not collide with the steel mesh 11 when deformed.
- the steel mesh 11 can prevent external objects from damaging and damaging the diaphragm 12, and even when the diaphragm 12 is deformed by vibration, the steel mesh 11 has a certain damping effect on the deformation of the diaphragm 12, so that the diaphragm 12 deforms and adjusts with the sound pressure.
- the first airtight cavity 6 is compliant, it can reduce the interference to the entire acoustic device, and even reduce the interference to the entire acoustic device application electronic equipment.
- the steel mesh 11 is arranged on the side of the diaphragm 12 away from the first sealed cavity 6 to cover the mounting hole 211.
- the bottom 111 of the steel mesh 11 is at a certain distance from the diaphragm 12 to ensure the deformation space of the diaphragm 12, It also has a protective and dustproof effect on the diaphragm 12, as well as a certain damping effect.
- the second airtight cavity 7 encloses the sound wave generated by the diaphragm 12 during deformation in the second airtight cavity 7.
- the electronic device may be a mobile phone, a tablet computer, a notebook computer, etc. That is, part or all of the first housing 2 is formed by the housing of the electronic device, or part or all of the cavity wall of the second airtight cavity 7 is formed by the housing of the electronic device, or the first airtight cavity 6 and Part or all of the cavity wall of the second airtight cavity 7 is formed by the housing of the electronic device.
- the housing of the electronic device doubles as the cavity wall of the first airtight cavity 6 and/or the second airtight cavity 7, which can make full use of the space inside the electronic device while saving a part of the space occupied by the cavity wall, which is more conducive to electronics
- the cavity wall of the second sealed cavity 7 is the second housing 5.
- the “closed” described in the present embodiment and the present invention can be a fully closed physical structure or a relatively closed state.
- the first closed cavity 6 may include requirements based on product use
- the pressure equalization holes 23 opened to balance the internal and external air pressure and have no significant effect on the rapid changes of sound pressure, or other open-hole structures, are also regarded as closed chambers.
- the second airtight cavity 7 may include the gaps generated when combined with the first airtight cavity 6 and the gaps of its own structure. They can effectively isolate the sound waves generated by the diaphragm 12 and have no effect on the sound waves generated by the sound unit. Obvious influence is also regarded as a closed cavity. In general, the total area of the above-mentioned openings or gaps does not exceed 20mm 2 .
- the bottom 111 is provided with communicating holes 114 for equalizing the air pressure on the inner and outer sides of the bottom 111.
- the number of communicating holes 114 is not limited and can be set according to actual requirements.
- the diaphragm 12 is deformed so that the air pressure in the second sealed cavity 7 changes.
- the bottom of the mounting groove 214 and the plane of the notch of the mounting groove 214 are at an acute angle, and the parts of the electronic device touch the first housing 2 or the flexible When the deformable component 1 is mounted, there is a gap between the flexible deformable component 1 and the components of the electronic device, which can equalize the air pressure in the inner space of the mounting groove 214 and the second sealed cavity 7.
- the upper shell 21 is provided with a mounting groove 214, which is formed by recessing the upper shell 21 in the direction of the first airtight cavity 6.
- the shape of the mounting groove 214 matches the shape of the flexible deformable component 1, and is flexible
- the deformable component 1 is installed in the installation groove 214 to cover the installation hole 211.
- the first housing 2 of the acoustic device is provided with a mounting groove 214, which can effectively reduce the space occupied by the flexible deformable component 1 of the acoustic device, reduce the thickness of the acoustic device, and will not occupy the volume of the second sealed cavity 7.
- the side wall of the mounting groove 214 is perpendicular to the plane where the diaphragm 12 is located, and the gap between the side portion 112 and the side wall of the mounting groove 214 is small, thereby effectively ensuring the volume of the first sealed cavity 6.
- the side wall of the installation groove 214 and the plane of the diaphragm 12 are inclined at a certain angle, and the slot area of the installation groove 214 is larger than the area of the bottom of the installation groove 214, which facilitates the injection of glue between the side 112 and the side wall of the installation groove 214 .
- the side wall of the installation groove 214 is perpendicular to the plane where the diaphragm 12 is located, and the side wall of the installation groove 214 is recessed in a direction away from the flexible deformation component 1 to form a glue injection groove 215, which ensures that the first In the case of the volume of the closed cavity 6, it is convenient to inject glue and increase the fixed area.
- the top view of the flexible deformable component 1 is rectangular, and the glue injection grooves 215 are provided on two opposite sides of the flexible deformable component 1.
- the side wall of the installation groove 214 is provided with an exhaust groove 216 that communicates the first enclosed cavity 6 and the second enclosed cavity 7.
- the above design enables the sound waves generated by the vibration of the diaphragm 12 to be transmitted to the second sealed cavity 7 through the exhaust groove 216, which can prevent the side of the diaphragm 12 facing the second sealed cavity 7 from being in the second sealed cavity 7 during assembly.
- the other parts of the device block and cause the low-frequency sensitivity increase to decrease or fail. Even if the notch of the mounting groove 214 is completely blocked by other components, the air venting groove 216 can realize the gap between the end of the flexible deformable component 1 far away from the notch of the mounting groove 214 and other components and the airflow of the second closed cavity 7 Of connectivity.
- the acoustic device of the present invention further includes a dust-proof net 8, which is covered by the installation groove 214, and the flexible deformable component 1 is located in the dust-proof net 8 and enclosed by the first housing 2.
- the arrangement of the dust-proof net 8 can effectively block external dust from entering the first sealed cavity 6, thereby affecting the performance of the product, and at the same time, it can improve the appearance of the product and make the product more integrated.
- the dust-proof net 8 is a mesh cloth with a simple structure and convenient installation.
- the acoustic device includes a first housing 2.
- the sound generating unit 3 is mounted on the first housing 2 to form a sound generating assembly, and a first airtight is formed between the vibrating diaphragm of the sound generating unit 1 and the first housing 2
- a mounting hole 211 is opened on the first housing 2
- a diaphragm 12 is provided on the mounting hole 211.
- the mounting hole 211 and the diaphragm 12 are not limited to one set, and can be different in the first housing 2. Set multiple groups of locations.
- the acoustic device includes a second housing 5, the sound generating component is installed in the second housing 5, and a second sealed cavity 7 is formed between the second housing 5 and the first housing 2. Wherein, when there are other components in the second housing 5, the second sealed cavity 7 is actually constituted by the gap between the components and the second housing 5 and the first housing 2.
- the sound generating unit 3 is arranged inside the first housing 2, and the two form an integral structure, and then are assembled with the second housing 5.
- the first housing 2 is provided with a through hole, and the front side space of the vibrating diaphragm is communicated with the through hole, and the sound is radiated to the sound hole 212 of the acoustic device through the through hole.
- the acoustic device is installed in an electronic device such as a mobile phone, and the housing of the electronic device doubles as the second housing 5 of the acoustic device.
- the space between the housing and internal components of the electronic equipment and the first housing 2 of the acoustic device forms a second closed cavity 7, omitting the second housing 5 of the acoustic device itself, and making full use of the electronic equipment housing components
- the gap space between the two can realize the maximized design of the second closed cavity 7.
- the main bodies of the first airtight cavity 6 and the second airtight cavity 7 extend along the horizontal direction formed by the length and width of the acoustic device.
- the horizontal direction can also be defined by a direction perpendicular to the thickness direction of the acoustic device.
- the horizontal direction generally refers to the direction parallel to the horizontal plane when the acoustic device is placed on a horizontal plane, and the two chambers are arranged along the horizontal direction, so as not to occupy the space in the height direction of the acoustic device as much as possible, which is beneficial to the thin design of the product .
- the diaphragm 12 deforms with the sound pressure, and the volume of the first sealed cavity 6 is adjustable, thereby increasing the equivalent sound of the first sealed cavity 6 and effectively reducing the resonance frequency of the acoustic device , Improve low-frequency sensitivity; through the second sealed cavity 7 to isolate the sound radiation generated during the deformation process of the diaphragm 12, the radiated sound wave of the diaphragm 12 is enclosed inside the acoustic device to avoid the opposite phase radiated sound wave of the diaphragm 12, The sound waves radiated in the forward direction of the unit 3 cause a cancellation effect, thereby greatly improving the low-frequency sensitivity of the product as a whole.
- the volume of the second sealed cavity in this embodiment is greater than the volume of the first sealed cavity, which can make the deformation of the diaphragm 12 easier, which is more conducive to increasing the equivalent acoustic compliance of the first sealed cavity and effectively reducing the resonance frequency of the acoustic device. Improve low frequency sensitivity.
- the present invention provides an electronic device on which the acoustic device in the above-mentioned embodiment is installed.
- the electronic device may be a mobile phone, a tablet computer, a notebook, or the like.
- the electronic device specifically includes a housing of the electronic device, and at least a part of the housing of the electronic device is used to form a first sealed cavity and/or a second sealed cavity of the acoustic device. That is, part or all of the first housing 2 is formed by the housing of the electronic device, or part or all of the second housing 5 is formed by the housing of the electronic device, or the first housing 2 and the second housing Part or all of 5 is formed by the housing of the electronic device.
- the housing of the electronic device doubles as the first housing 2 and the second housing 5, which can make full use of the space inside the electronic device, while saving a part of the space occupied by the cavity wall, which is more conducive to the thin design of the electronic device .
- the acoustic device includes a first housing 2, the sound generating unit 3 is mounted on the first housing 2 to form a sound generating assembly, and the vibration diaphragm of the sound generating unit 3 is connected to the first housing 2
- a first airtight cavity is formed between the first housing 2 and a mounting hole 211 is provided on the first housing 2, and a diaphragm 12 is provided on the mounting hole 211.
- the mounting hole 211 and the diaphragm 12 are not limited to one set, and can be installed in the first housing 2 sets of multiple groups in different positions.
- the acoustic device further includes a second housing, and the sound generating component is installed in the second housing, and a second sealed cavity is formed between the second housing and the first housing 2.
- the second housing is the housing of the electronic device.
- the space between the housing of the electronic equipment and the internal components and the first housing 2 of the acoustic device forms a second closed cavity.
- the housing of the electronic equipment doubles as the second housing of the acoustic device, omitting the acoustic device itself.
- the second housing makes full use of the gap space between the components of the electronic device housing, can realize the maximum design of the second closed cavity, and is beneficial to the thin design of the electronic device.
- the flexible deformable component is installed as a whole on the first housing of the acoustic device, which can effectively reduce the assembly process, avoid defects caused by the soft material of the flexible deformable part, improve efficiency and yield, and has Conducive to automatic feeding;
- the protective device of the flexible deformation component is basin-shaped, which can provide part of the vibration space for the flexible deformation part, so the two can be combined together.
- the basin-shaped protective device is in the acoustic device It takes up relatively small space in the length and width directions, and the pot-shaped protective device has a strong structure and is not easy to deform, so as to avoid abnormal size due to deformation of parts and cause poor performance; the bottom of the installation groove and the plane of the groove The acute angle is beneficial to balance the air pressure between the internal space of the installation groove and the second closed cavity.
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Abstract
本发明公开一种声学装置,包括:发声单元,发声单元的振动膜片后侧形成第一密闭腔,第一密闭腔的腔体壁向第一密闭腔的方向凹陷形成安装槽,安装槽的槽底上开设有安装孔,槽底与安装槽的槽口所在平面呈锐角,槽底设有覆盖安装孔的柔性形变组件,柔性形变组件包括结合到一起的柔性形变部和防护装置,防护装置包括固定部、底部和侧部,固定部和底部位于不同的平面,固定部和底部通过侧部连接,固定部与柔性形变部连接固定,柔性形变部连接固定于槽底,底部上设有连通孔。在第一密闭腔的外侧设有第二密闭腔,柔性形变组件位于第一密闭腔和第二密闭腔之间。本发明的声学装置的柔性形变组件为一体结构,有效减少组装工序,提高良品率。
Description
本发明涉及声学技术领域,特别涉及一种声学装置及安装有该声学装置的电子设备。
传统结构的声学系统包括封闭箱体和设置在封闭箱体上的发声单元,封闭箱体与发声单元之间形成腔室,由于现终端电子产品的体积越做越小,随着终端电子产品体积减小,厚度减薄,与之配合的声学装置的体积也越来越小,而消费者对产品的性能却要求越来越高,尤其对声音的低音效果要求越来越高。对于小体积的声学装置,受体积限制,声学系统中的腔室的容积也受限制,这种声学系统很难实现能令人满意地再现低音的效果。
目前一种做法是在声学系统的壳体上设置柔性膜,柔性膜在使用或者装配过程中,容易与其他部件发生接触致使柔性膜受损,进而影响产品性能。
发明内容
本发明的主要目的是提出一种声学装置及电子设备,旨在解决声学装置的柔性形变部在使用或者装配过程中,容易受损的技术问题。
为实现上述目的及其他目的,本发明提出的一种声学装置,包括:
发声单元,所述发声单元包括振动膜片,所述声学装置上设置有出声孔,所述振动膜片前侧的声波通过所述出声孔对外辐射;所述振动膜片后侧形成第一密闭腔,所述第一密闭腔的腔体壁为第一壳体,所述第一壳体向所述第一密闭腔的方向凹陷形成安装槽,所述安装槽的槽底上开设有安装孔,在所述第一密闭腔的外侧设有第二密闭腔,所述柔性形变组件位于所述第一密闭腔和所述第二密闭腔之间,所述第二密闭腔将所述柔性形变部在形变时产生的声波封闭在所述 第二密闭腔内;所述槽底与所述安装槽的槽口所在平面呈锐角,所述槽底设有覆盖所述安装孔的柔性形变组件,所述柔性形变组件包括结合到一起的柔性形变部和防护装置,所述防护装置包括固定部、底部和侧部,所述侧部设于所述底部的周边,所述侧部沿轴向的一端与所述底部结合固定,所述固定部设于所述侧部沿轴向的另一端的外周边,所述底部和所述侧部形成对应所述柔性形变部的罩体并通过所述固定部安装于所述第一壳体,所述底部上设有连通孔。
可选地,所述安装槽的侧壁上设有连通所述安装槽内部和所述第二密闭腔的排气槽。
可选地,所述安装槽的侧壁向远离所述柔性形变组件的方向凹陷形成注胶槽。
可选地,所述柔性形变组件不超出所述安装槽的槽口所在的平面。
可选地,还包括防尘网,所述防尘网盖设于所述安装槽,所述柔性形变组件位于所述防尘网与所述第一壳体围合形成的空间内。
可选地,所述防尘网为网布。
可选地,所述防护装置为钢网。
可选地,所述第二密闭腔的容积大于所述第一密闭腔的容积;用于安装声学装置的电子设备的外壳的至少一部分用于形成所述第一密闭腔和/或所述第二密闭腔。
可选地,所述第一壳体包括上壳和下壳,所述发声单元的磁路系统包括导磁轭,所述安装孔设于所述上壳,所述柔性形变组件安装于所述安装孔,所述下壳设有开口,所述导磁轭嵌设于所述开口中。
为实现上述目的及其他目的,本发明提供一种电子设备,该电子设备包括电子设备的外壳和上述的声学装置。
本发明的技术效果至少在于,声学装置的第一密闭腔的腔体壁向第一密闭腔的方向凹陷形成安装槽,安装槽的槽底上开设有安装孔,槽底与所述安装槽的槽口所在平面呈锐角,槽底设有覆盖安装孔的柔性形变组件,柔性形变组件包括结合到一起的柔性形变部和防护装置,防护装置包括固定部、底部和连接固定部、底部的侧部,侧部设于底部的周边,侧部沿轴向的一端与底部结合固定,固定部设于侧部沿轴向的另一端的外周边,底部和侧部形成对应柔性形变部的罩体并通过固定部安装于第一壳体,底部上设有连通孔。这样,柔性形变部上盖有防护装置,以保护柔性形变部不受损伤、破坏。
通过以下参照附图对本发明的示例性实施例的详细描述,本发明的其它特征及其优点将会变得清楚。
构成说明书的一部分的附图描述了本发明的实施例,并且连同说明书一起用于解释本发明的原理。
图1是本发明声学装置一个实施例的剖视图
图2是本发明声学装置另一个实施例的爆炸图;
图3是本发明声学装置另一个实施例除去防尘网的俯视图;
图4是本发明声学装置另一个实施例的剖视图;
图5是本发明声学装置另一个实施例中上壳与柔性形变组件的装配结构示意图;
图6是本发明声学装置另一个实施例中上壳与防护装置的装配结构示意图;
图7是本发明声学装置另一个实施例中下壳与发声单元的装配结构示意图;
图8是本发明声学装置一个实施例中钢网的结构示意图;
图9是本发明声学装置一个实施例中振膜的结构示意图;
图10是本发明声学装置一个实施例中柔性形变组件的剖视图;
附图标号说明:
1为柔性形变组件,11为钢网,111为底部,112为侧部,113为固定部,114为连通孔,12为振膜,121为结合部,122为折环,123为中央部,124为补强部,2为第一壳体,21为上壳,211为安装孔,212为出声孔,214为安装槽,215为注胶槽,216为排气槽,22为下壳,221为开口,23为均压孔,3为发声单元,31为导磁轭,4为FPC,5为第二壳体,6为第一密闭腔,7为第二密闭腔。
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到:除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的,绝不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它例子可以具有不同的值。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。
本发明提出一种声学装置,用于电子设备上发声。
该声学装置包括发声单元3,如图1-3所示,其中,发声单元3为微型发声单元3,更具体的,发声单元3为微型的动圈式扬声器。发声单元3一般包括壳 体和容置固定在壳体中的振动系统和磁路系统,振动系统包括固定在壳体上的振动膜片和结合在振动膜片上的音圈,磁路系统形成有磁间隙,音圈设置于该磁间隙中,音圈通入交流电后在磁场中做上下往复运动,从而带动振动膜片振动发声。
本发明的声学装置包括第一壳体2,第一壳体2分为上壳21和下壳22,上壳21和下壳22围合形成容腔,发声单元3设于容腔内,发声单元3通过FPC4与外部电路实现电路导通。声学装置上设置有出声孔212,在一个实施例中,上壳21上设有出声孔212,振动膜片前侧的声波通过出声孔212对外辐射,振动膜片后侧的声波留置于声学装置内部。振动膜片与外壳和磁路系统之间形成有腔室,一般在外壳上或者磁路系统上或者两者之间开设有后声孔,振动膜片后侧的声波会通过该后声孔进入声学装置的内部,优选地,后声孔开设于发声单元3的四个角部。本发明的发声单元3的振动膜片的振动方向平行于声学装置的厚度方向,有利于声学装置的薄型化设计。
在本实施例中,如图7所示,声学装置的下壳22对应发声单元3的位置设有开口221,开口221形状及大小与发声单元3相适配,发声单元3的磁路系统包括导磁轭31,导磁体嵌入至开口221中,表现出导磁轭31外露于声学装置。
进一步地,振动膜片后侧形成第一密闭腔6,第一密闭腔6的腔体壁上开设有安装孔211,安装孔211的形状可以为圆形、矩形、正方形、椭圆形、菱形或不规则图形,本发明对此不做限制,优选地,安装孔211的形状为矩形。第一密闭腔6的腔体壁即为第一壳体2。
在本发明中,如图4所示,第一壳体2向第一密闭腔6的方向凹陷形成安装槽214,安装槽214的槽底上开设有安装孔211,槽底与所述安装槽214的槽口所在平面呈锐角,安装槽214的槽底处设有覆盖安装孔211的柔性形变组件1,柔性形变组件1的形状与安装孔211的形状相适配。在第一密闭腔6的外侧 设有第二密闭腔7,柔性形变组件1位于第一密闭腔6和第二密闭腔7之间。槽底与安装槽214的槽口所在平面呈锐角,以至于安装于安装槽214的槽底上的柔性形变组件1整体上同样与安装槽214的槽口所在平面呈锐角,即柔性形变组件1的一端相较于另外一端在垂直方向上存在高度差,其一端相较另外一端更为距离安装槽214的槽口更远,即便电子设备的部件存在抵接到第一壳体2或者柔性形变组件1上,柔性形变组件1的距离安装槽214的槽口更远的一端与电子设备的部件之间留有空隙。本发明对槽底与安装槽214的槽口所在平面呈锐角的大小不做限定,可根据实际需求进行设定。进一步地,柔性形变组件1不超出安装槽214的槽口所在的平面,如此,有效降低外部部件与柔性形变组件1接触甚至剐蹭的几率。
如图8-10所示,柔性形变组件1包括结合到一起的柔性形变部和防护装置,优选地,柔性形变部和防护装置通过胶粘固定结合,通过胶粘,柔性形变部与防护装置结合为一个整体,方便下一步的组装。防护装置由硬质材料制成,可以是金属、塑料等,优选地,防护装置为钢网11,基于钢网11设计可以减小整体的厚度,如此有利于减小声学装置的厚度。以下以钢网11为例进行说明。
在一个实施例中,柔性形变部为振膜12,振膜12包括结合部121、折环122、中央部123和补强部124,结合部121用以固定振膜12,结合部121夹于安装槽214的槽底和固定部113之间,中央部123通过折环122弹性悬着于结合部121,中央部123上设置有补强部124,用以中央部123的结构强度。在本实施例中,补强部124设于中央部123背离底部111的一侧,避免占用柔性形变部与钢网11之间的空间,以保障柔性形变部的振动空间。折环122朝向钢网11凸起,减小柔性形变组件1的厚度。中央部123为整体结构或者中央部123的中心位置镂空,该补强部124的强度高于中央部123的强度,可以是金属、塑料、碳纤维或者是其复合结构等。以下以振膜12为例进行说明。
当声学装置在工作状态下,当振动膜片向第一密闭腔6振动压缩振动膜片后侧的容积时,声压会通过第一密闭腔6传递至振膜12,振膜12会朝向第一壳体2外侧来扩张形变;反之,当振动膜片背离第一密闭腔6振动时,振膜12会向内收缩形变,从而对第一密闭腔6的容积进行调节。其中,振膜12可以是由一层热塑性弹性体材料层制成的单层结构或者为至少复合一层热塑性弹性体材料层的多层复合结构,热塑性弹性体材料包括聚酯类、聚氨酯类、聚酰胺类、聚苯乙烯类、聚烯烃类、动态硫化橡胶和共混物型热塑性塑料中的至少一种。基于热塑性弹性体材料具有一定的柔度,受振动影响时容易发生形变,如此振膜12可对第一密闭腔6进行调节。当振膜12的材料不局限于上述材料,还可以是一些能够实现柔性形变的塑料、硅胶、橡胶等材料。
钢网11包括固定部113、底部111和侧部112,侧部112设于底部111的周边,侧部112沿轴向的一端与底部111结合固定,固定部113设于侧部112沿轴向的另一端的外周边,底部111和侧部112形成对应振膜12的罩体并通过固定部113安装于第一壳体2,可大体上把钢网11视作盆状,固定部113即“盆沿”,底部111即“盆底”,侧部112即“盆壁”。固定部113与振膜12连接固定,振膜12连接固定于安装槽214的槽底,侧部112与底部111可构成振膜12的部分振动空间。底部111与振膜12之间的距离被设置为振膜12在形变时不会与钢网11相碰。
钢网11可防止外部物体对振膜12进行破坏、损伤,甚至振膜12振动形变时,钢网11对振膜12的形变起到一定的阻尼作用,使振膜12随声压变形,调节第一密闭腔6顺性时,可以减少对声学装置整机的干扰,甚至可以减少对声学装置的应用电子设备整机的干扰。
具体地,钢网11设置于振膜12的背离第一密闭腔6的一侧,覆盖安装孔211,钢网11的底部111与振膜12存在一定距离以保证振膜12形变空间的同时,还对振膜12起到保护和防尘效果,以及一定的阻尼作用。
当振动膜片振动时,第一密闭腔6的内部声压发生变化,振膜12随第一密闭腔6的声压变化而产生形变,对第一密闭腔6进行容积大小的柔性调节;第二密闭腔7将振膜12在形变时产生的声波封闭在第二密闭腔7内。
优选地,用于安装声学装置的电子设备的外壳的至少一部分用于形成第一密闭腔6和/或第二密闭腔7。其中,电子设备可以是手机、平板电脑、笔记本电脑等。即,第一壳体2的部分或全部是由电子设备的外壳构成,或者,第二密闭腔7的腔体壁的部分或全部是由电子设备的外壳构成,或者,第一密闭腔6和第二密闭腔7的腔体壁的部分或全部由电子设备的外壳构成。本发明中,电子设备的外壳兼做第一密闭腔6和/第二密闭腔7的腔体壁,能够充分利用电子设备内部的空间,同时节约一部分腔体壁占用的空间,更加有利于电子设备的薄型化设计。第二密闭腔7的腔体壁为第二壳体5。
需要说明的是,本实施例及本发明中所描述的“封闭”,可以是物理结构上的全封闭,也可以是相对密闭状态,例如,第一密闭腔6,可以包括基于产品使用要求,开设的起到平衡内外气压且对声压快速变化没有显著影响的均压孔23,或者其他开孔结构,也视为密闭腔。又例如第二密闭腔7,可以包括与第一密闭腔6组合时产生的缝隙等,以及其自身结构的缝隙等,它们能够将振膜12产生的声波有效隔离,对发声单元产生的声波没有明显影响,也视为密闭腔。一般情况下,上述开孔或缝隙的总面积不超过20mm
2。
具体地,底部111上设有连通孔114,用以均衡底部111内外两侧的气压,连通孔114的数量不做限定,可根据实际需求进行设置。振膜12产生形变以致第二密闭腔7内气压发声变化,安装槽214的槽底与安装槽214的槽口所在平 面呈锐角,电子设备的部件部分抵接触碰到第一壳体2或者柔性形变组件1上时,柔性形变组件1与电子设备的部件之间存在空隙,可均衡安装槽214内部空间与第二密闭腔7内的气压。
在一个实施例中,上壳21设置有安装槽214,安装槽214由上壳21向第一密闭腔6的方向凹陷形成,安装槽214的形状与柔性形变组件1的形状相适配,柔性形变组件1安装于安装槽214内以覆盖安装孔211。声学装置的第一壳体2设置安装槽214,可有效降低柔性形变组件1占用声学装置的空间,减小声学装置的厚度,且不会占用第二密闭腔7的容积。安装槽214的侧壁与振膜12所在的平面垂直,侧部112与安装槽214的侧壁间隙较小,进而有效保证第一密闭腔6的体积。
或者安装槽214的侧壁与振膜12所在平面呈一定倾斜角度,安装槽214的槽口面积大于安装槽214槽底的面积,方便在侧部112与安装槽214的侧壁之间注胶。
优选地,如图5所示,安装槽214的侧壁与振膜12所在的平面垂直,且安装槽214的侧壁向远离柔性形变组件1的方向凹陷形成注胶槽215,在保证第一密闭腔6体积的情况下,方便注胶、增大固定的面积。在一个实施例中,柔性形变组件1俯视图为矩形,注胶槽215设在柔性形变组件1相对的两边。
在一个实施例中,安装槽214的侧壁上设有连通所述第一密闭腔6和所述第二密闭腔7的排气槽216。上述设计,使得振膜12振动产生的声波可以通过排气槽216传递到第二密闭腔7里,可以避免在装配时,振膜12朝向第二密闭腔7的一面被第二密闭腔7中的其他零部件阻挡而导致低频段灵敏度提升幅度降低或失效的问题。即便安装槽214的槽口被其他零部件完全遮挡,通过排气槽216可实现柔性形变组件1的远离安装槽214槽口的一端与其他零部件之间的空隙和第二密闭腔7的气流的连通。
如图2、4、6所示,本发明的声学装置还包括防尘网8,防尘网8盖设于安装槽214,柔性形变组件1位于防尘网8与第一壳体2围合形成的空间内。防尘网8的设置,可以有效阻挡外部灰尘进入第一密闭腔6,进而影响产品性能,同时可改善产品外观,使产品更具有整体性。优选地,防尘网8为网布,结构简单,安装方便。
作为一种具体实施例,声学装置包括第一壳体2,发声单元3安装在第一壳体2上形成发声组件,发声单元1的振动膜片与第一壳体2之间形成第一密闭腔6,在第一壳体2上开设有安装孔211,在所述安装孔211上设有振膜12,安装孔211和振膜12不限于一组,可以在第一壳体2的不同位置设置多组。声学装置包括第二壳体5,发声组件安装于第二壳体5内,第二壳体5与第一壳体2之间形成第二密闭腔7。其中,在第二壳体5内还存在其他零部件的情况下,第二密闭腔7实际上由零部件与第二壳体5和第一壳体2之间的间隙构成。
本实施例中,发声单元3设置在第一壳体2的内部,两者形成一个整体结构,然后与第二壳体5进行装配。第一壳体2上设有通孔,振动膜片前侧空间与该通孔连通,通过该通孔将声音辐射到声学装置的出声孔212。
声学装置安装于手机等电子设备中,且电子设备的外壳兼做声学装置的第二壳体5。电子设备的外壳与内部零部件以及与声学装置的第一壳体2之间的空间形成第二密闭腔7,省略了声学装置自身的第二壳体5,充分利用了电子设备外壳零部件之间的间隙空间,可以实现第二密闭腔7的最大化设计。
本实施例中,第一密闭腔6和第二密闭腔7的主体沿声学装置的长和宽构成的水平方向延伸,该水平方向也可以用垂直于声学装置厚度方向的方向来定义。该水平方向一般是指声学装置放于一个水平面时,平行于该水平面的方向,两个腔室沿该水平方向设置,尽量不占用声学装置的高度方向上的空间,有利于产品的薄型化设计。
该声学装置中,通过设置振膜12,振膜12随着声压产生形变,第一密闭腔6的容积大小可调,从而增加第一密闭腔6等效声顺,有效降低声学装置共振频率,提升低频灵敏度;通过第二密闭腔7来隔绝振膜12形变过程中产生的声音辐射,将振膜12的辐射声波封闭于声学装置内部,避免振膜12的反相位辐射 声波,对发声单元3的正向辐射声波造成抵消影响,进而整体上较大幅度提升产品的低频段灵敏度。
并且,本实施例中第二密闭腔的容积大于第一密闭腔的容积,可以使振膜12的变形更加容易,更加有利于增加第一密闭腔等效声顺,有效降低声学装置共振频率,提升低频灵敏度。
本发明提出一种电子设备,在电子设备上安装有上述实施例中的声学装置,电子设备可以是手机、平板电脑、笔记本等。
电子设备具体包括电子设备的外壳,所述电子设备的外壳的至少一部分用于形成声学装置的第一密闭腔和/或第二密闭腔。即,第一壳体2的部分或全部是由电子设备的外壳构成,或者,第二壳体5的部分或全部是由电子设备的外壳构成,或者,第一壳体2和第二壳体5的部分或全部由电子设备的外壳构成。本发明中,电子设备的外壳兼做第一壳体2和第二壳体5,能够充分利用电子设备内部的空间,同时节约一部分腔体壁占用的空间,更加有利于电子设备的薄型化设计。
在该具体实施例中,所述声学装置包括第一壳体2,所述发声单元3安装在第一壳体2上形成发声组件,所述发声单元3的振动膜片与第一壳体2之间形成第一密闭腔,在第一壳体2上开设有安装孔211,在安装孔211上设有振膜12,安装孔211和振膜12不限于一组,可以在第一壳体2的不同位置设置多组。所述声学装置还包括第二壳体,所述发声组件安装于第二壳体中,第二壳体与第一壳体2之间形成第二密闭腔。其中,第二壳体为电子设备的外壳。实际上,电子设备外壳与内部零部件以及与声学装置的第一壳体2之间的空间形成第二密闭腔,电子设备的外壳兼做声学装置的第二壳体,省略了声学装置自身的第二壳体,充分利用了电子设备壳体零部件之间的间隙空间,可以实现第二密闭腔的最大化设计,有利于电子设备薄型化设计。
采用本发明的上述结构和组装方法,柔性形变组件作为整体安装于声学装置的第一壳体,可以有效减少组装工序,避免因柔性形变部材质较软引起不良,提高效率和良品率,而且有利于自动上料;柔性形变组件的防护装置为盆状,能够为柔性形变部提供部分振动空间,因此可以实现将两者结合到一起,相较平板状的钢网,盆状防护装置在声学装置的长和宽的方向上占用空间相对较小,而且盆状防护装置结构强度大,不易变形,避免因零件变形导致尺寸异常,引起性能不良;安装槽的槽底与安装槽的槽口所在平面呈锐角,有利于均衡安装槽的内部空间与第二密闭腔的气压。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上例子仅是为了进行说明,而不是为了限制本发明的范围。本领域的技术人员应该理解,可在不脱离本发明的范围和精神的情况下,对以上实施例进行修改。本发明的范围由所附权利要求来限定。
Claims (10)
- 一种声学装置,其特征在于,包括:发声单元,所述发声单元包括振动膜片,所述声学装置上设置有出声孔,所述振动膜片前侧的声波通过所述出声孔对外辐射;所述振动膜片后侧形成第一密闭腔,所述第一密闭腔的腔体壁为第一壳体,所述第一壳体向所述第一密闭腔的方向凹陷形成安装槽,所述安装槽的槽底上开设有安装孔,在所述第一密闭腔的外侧设有第二密闭腔,所述柔性形变组件位于所述第一密闭腔和所述第二密闭腔之间,所述第二密闭腔将所述柔性形变部在形变时产生的声波封闭在所述第二密闭腔内;所述槽底与所述安装槽的槽口所在平面呈锐角,所述槽底设有覆盖所述安装孔的柔性形变组件,所述柔性形变组件包括结合到一起的柔性形变部和防护装置,所述防护装置包括固定部、底部和侧部,所述侧部设于所述底部的周边,所述侧部沿轴向的一端与所述底部结合固定,所述固定部设于所述侧部沿轴向的另一端的外周边,所述底部和所述侧部形成对应所述柔性形变部的罩体并通过所述固定部安装于所述第一壳体,所述底部上设有连通孔。
- 根据权利要求1所述的声学装置,其特征在于,所述安装槽的侧壁上设有连通所述安装槽内部和所述第二密闭腔的排气槽。
- 根据权利要求1所述的声学装置,其特征在于,所述安装槽的侧壁向远离所述柔性形变组件的方向凹陷形成注胶槽。
- 根据权利要求1所述的声学装置,其特征在于,所述柔性形变组件不超出所述安装槽的槽口所在的平面。
- 根据权利要求4所述的声学装置,其特征在于,还包括防尘网,所述防尘网盖设于所述安装槽,所述柔性形变组件位于所述防尘网与所述第一壳体围合形成的空间内。
- 根据权利要求5所述的声学装置,其特征在于,所述防尘网为网布。
- 根据权利要求1所述的声学装置,其特征在于,所述防护装置为钢网。
- 根据权利要求1所述的声学装置,其特征在于,所述第二密闭腔的容积大于所述第一密闭腔的容积;用于安装声学装置的电子设备的外壳的至少一部分用于形成所述第一密闭腔和/或所述第二密闭腔。
- 根据权利要求1所述的声学装置,其特征在于,所述第一壳体包括上壳和下壳,所述发声单元的磁路系统包括导磁轭,所述安装孔设于所述上壳,所述柔性形变组件安装于所述安装孔,所述下壳设有开口,所述导磁轭嵌设于所述开口中。
- 一种电子设备,其特征在于,所述电子设备包括电子设备的外壳和如权利要求1-9所述的声学装置。
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