CN111065021B - Sound production device - Google Patents
Sound production device Download PDFInfo
- Publication number
- CN111065021B CN111065021B CN201911237932.7A CN201911237932A CN111065021B CN 111065021 B CN111065021 B CN 111065021B CN 201911237932 A CN201911237932 A CN 201911237932A CN 111065021 B CN111065021 B CN 111065021B
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- Prior art keywords
- sound
- diaphragm
- vibration
- magnetic
- fixed
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000013016 damping Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims 2
- 229920006362 Teflon® Polymers 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is fixed on the basin frame, and the magnetic circuit system drives the vibration system to vibrate and sound; the vibration system comprises a vibration diaphragm fixed on one side of the basin frame, which is far away from the magnetic circuit system, and a voice coil used for driving the vibration diaphragm to vibrate and sound, and the vibration diaphragm, the basin frame and the magnetic circuit system jointly enclose a sound-producing inner cavity; the vibrating diaphragm comprises a vibrating part, a corrugated ring part and a fixing part, wherein the corrugated ring part is bent and extended outwards from the periphery of the vibrating part, the fixing part is bent and extended from one side of the corrugated ring part, which is far away from the vibrating part, and the fixing part is fixed on the basin stand; the vibrating diaphragm is made for waterproof ventilative material, and the sound production inner chamber carries out the air leakage through the vibrating diaphragm. Compared with the related art, the sounding device has the advantages of good waterproof effect and high reliability.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic transduction, in particular to a sounding device applied to a portable electronic product.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. A sound generating device for playing sound is widely applied to smart mobile devices such as current mobile phones.
The sound production device of the related art comprises a basin frame, a vibration system and a magnetic circuit, wherein the vibration system is fixed on the basin frame, the magnetic circuit drives the vibration system to vibrate and produce sound, and the vibration system comprises a vibrating diaphragm and a voice coil, the vibrating diaphragm is fixed on the basin frame, and the voice coil is driven to vibrate by the vibrating diaphragm. The vibrating diaphragm, the basin frame and the magnetic circuit system jointly enclose a sound production inner cavity.
However, in the related art, when the sound generating device is powered on to operate, the temperature of the rear cavity rises due to heat generation, so that the pressure in the sound generating cavity increases, and the vibration system is pressed to move forwards integrally, so that the sound of the sound generating device is reduced or is silent, and the vibration reliability of the sound generating device is affected.
Therefore, there is a need to provide a new sound generation device to solve the above technical problems.
[ summary of the invention ]
The invention aims to provide a sound production device with good waterproof effect and high reliability.
In order to achieve the above object, the present invention provides a sound production device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, and the magnetic circuit system drives the vibration system to vibrate and produce sound; the vibration system comprises a vibrating diaphragm fixed on one side of the basin frame, which is far away from the magnetic circuit system, and a voice coil used for driving the vibrating diaphragm to vibrate and sound, and the vibrating diaphragm, the basin frame and the magnetic circuit system jointly enclose a sound-producing inner cavity; the vibrating diaphragm comprises a vibrating part, a folded ring part and a fixing part, wherein the folded ring part is bent and extended outwards from the periphery of the vibrating part, the fixing part is bent and extended from one side of the folded ring part, which is far away from the vibrating part, and the fixing part is fixed on the basin stand; the vibrating diaphragm is made of waterproof and breathable materials, and the sound production inner cavity carries out air leakage through the vibrating diaphragm.
Preferably, the diaphragm is made of tetrafluoroethylene material or polytetrafluoroethylene composite material.
Preferably, the cross section of the folded ring part is of an arc structure which is concave towards the direction close to the sounding inner cavity.
Preferably, the sound production device further comprises an upper cover plate which is covered on one side of the vibrating diaphragm, which is far away from the basin frame, and is fixed on the basin frame, and the upper cover plate is provided with a sound outlet which penetrates through the upper cover plate; the upper cover plate and the vibrating diaphragm jointly enclose a front sound cavity, the sound outlet communicates the front sound cavity with the outside, and the sound production inner cavity forms air leakage through the vibrating diaphragm and the front sound cavity.
Preferably, the vibration system further comprises a dome, and the dome is attached to the vibration part.
Preferably, the magnetic circuit system comprises a magnetic bowl fixed on one side of the basin frame far away from the vibrating diaphragm, main magnetic steel fixed on one side of the magnetic bowl close to the vibrating diaphragm, and auxiliary magnetic steel fixed on one side of the magnetic bowl close to the vibrating diaphragm and forming a magnetic gap with the main magnetic steel at an interval, and the voice coil is inserted into the magnetic gap.
Preferably, the sounding device further comprises a ventilation damping part, the magnetic bowl is provided with a leakage hole penetrating through the magnetic bowl, the ventilation damping part is attached to the magnetic bowl and completely covers the leakage hole, and the sounding inner cavity is located at the position of the leakage hole and is used for air leakage through the ventilation damping part.
Compared with the prior art, the sound production device has the advantages that the vibrating diaphragm is made of the waterproof and breathable material and has the characteristics of good waterproofness and breathability, so that the sound production device is good in waterproof performance, in addition, the sound production inner cavity can perform air leakage through the vibrating diaphragm, the air pressure balance between the sound production inner cavity and the outside is guaranteed, and the vibration reliability of the sound production device is improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a sound device according to the present invention;
FIG. 2 is an exploded perspective view of a sound device according to the present invention;
FIG. 3 is an exploded view of another perspective view of the sound device of the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 1.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a sound production device 100, which includes a frame 1, a vibration system 2, and a magnetic circuit system 3 having a magnetic gap 30.
The basin stand 1 is used for fixedly supporting the vibration system 2 and the magnetic circuit system 3.
The vibration system 2 is fixed to the frame 1 and includes a diaphragm 21 and a voice coil 22.
In this embodiment, the vibrating diaphragm 21 is fixed on a side of the basin frame 1 away from the magnetic circuit system 3, and the vibrating diaphragm 21, the basin frame 1 and the magnetic circuit system 3 together enclose a sound-generating inner cavity 10.
It should be noted that the vibrating diaphragm 21 is made of a waterproof and breathable material, so that the vibrating diaphragm 21 is made into a waterproof and breathable film; further, the waterproof and air-permeable material is preferably a Polytetrafluoroethylene (PTFE) material or a PTFE composite material, and because PTFE has good waterproof and air-permeable properties, the manufactured diaphragm 21 has good waterproof and air-permeable functions, thereby providing conditions for the sound-generating inner cavity 10 to perform air leakage through the diaphragm 21.
The diaphragm 21 includes a vibrating portion 211, a bending portion 212, and a fixing portion 213.
The folded ring part 212 is bent and extended outwards from the periphery of the vibrating part 211, and more specifically, the cross section of the folded ring part 212 is of an arc structure which is concave towards the direction close to the sounding inner cavity 10; the fixing part 213 is bent and extended from the side of the bending part 212 away from the vibrating part 211, and the fixing part 213 is fixed on the side of the frame 1 away from the magnetic circuit system 3; the vibration part 211 is spaced apart from the fixing part 213, and is configured to vibrate and generate sound.
The voice coil 22 is inserted in the magnetic gap 30 to drive the diaphragm 21 to vibrate and generate sound, specifically, the voice coil 22 is connected to the side of the vibration portion 211 close to the magnetic circuit system 3, and under the power-on condition, the voice coil 22 drives the vibration portion 211 to vibrate and generate sound.
Preferably, the vibration system 2 further includes a dome 23, and the dome 23 is attached to the vibration portion 211, so as to effectively improve the vibration performance of the vibration portion 211, and thus the acoustic performance of the sound production device 100 is excellent; in addition, since the vibration portion 211 is shielded by the dome 23, in the present embodiment, the sound-emitting chamber 10 mainly leaks air through the folded portion 212. Of course, it is also possible that the vibration system does not have a dome, and in an embodiment where no dome is provided, the sounding cavity simultaneously leaks air through the bellows portion and the vibration portion.
Further, the sound production device 100 is further provided with an upper cover plate 4, the upper cover plate 4 is covered on the vibrating diaphragm 21, the vibrating diaphragm 21 is far away from one side of the basin frame 1 and is fixed on the basin frame 1, namely, the fixing portion 213 is clamped and fixed between the basin frame 1 and the upper cover plate 4, so that the fixing reliability of the vibrating diaphragm 21 is effectively improved, and the vibration reliability of the vibration system 2 is high.
The upper cover plate 4 and the diaphragm 21 jointly enclose a front sound cavity 40; the upper cover plate 4 is provided with a sound outlet 41 penetrating through the upper cover plate, and the front sound cavity 40 is communicated with the outside through the sound outlet 41.
The magnetic circuit system 3 drives the vibration system 2 to vibrate and sound, and comprises a magnetic bowl 31, main magnetic steel 32 and auxiliary magnetic steel 33.
The magnetic bowl 31 is fixed on one side of the basin frame 1 far away from the vibrating diaphragm 21; the main magnet steel 32 is fixed on one side of the magnetic bowl 31 close to the vibrating diaphragm 21; the number of the secondary magnetic steels 33 is not limited, for example, in the present embodiment, the number of the secondary magnetic steels 33 includes two, two of the secondary magnetic steels 33 are respectively fixed to one side of the magnetic bowl 31 close to the diaphragm 21 and respectively arranged at two opposite sides of the primary magnetic steel 32 at intervals, and the two secondary magnetic steels 33 and the primary magnetic steel 32 together form the magnetic gap 30.
Further, the magnetic bowl 31 includes a magnetic bowl body 311 fixed to the frame 1 and an extension wall 312 bent and extended from the magnetic bowl body 311 toward a direction close to the diaphragm 21, the main magnetic steel 32 and the auxiliary magnetic steel 32 are respectively fixed to one side of the magnetic bowl body 311 close to the diaphragm 21, and the extension wall 312 and the main magnetic steel 32 and the auxiliary magnetic steel 32 are respectively arranged at intervals, and the three form the magnetic gap 30; the sounding cavity 10 is enclosed by the magnetic bowl body 311, the basin stand 1 and the diaphragm 21.
In the above structure, the vibrating diaphragm 21 is a waterproof and breathable film having waterproof and breathable functions, and the vibrating diaphragm 21 effectively prevents water vapor from entering the sounding inner cavity 10, so that the sounding device 100 has good waterproof performance; in addition, in this embodiment, the sounding inner cavity 10 forms air leakage with the front sounding cavity 40 through the hinge portion 212, so as to ensure air pressure balance between the sounding inner cavity 10 and the outside, avoid the phenomenon that the whole vibration system 2 moves towards the front sounding cavity 40 due to excessive internal pressure of the sounding inner cavity 10, ensure the vibration stability of the vibration system 2, and effectively improve the reliability of vibration of the sounding device 100.
Preferably, the sound production device 100 further comprises a gas-permeable damping member 5, and the magnetic bowl 31 is provided with a leakage hole 310 penetrating therethrough; specifically, leakage hole 310 runs through magnetism bowl body 311 sets up, ventilative damping part 5 pastes and locates magnetism bowl 31 covers completely leakage hole 310, sound production inner chamber 10 is in leakage hole 310's position is passed through ventilative damping part 5 carries out the air leakage, has guaranteed more effectively the atmospheric pressure balance in the sound production inner chamber 10 further improves sound production device 100's reliability.
Compared with the prior art, the sound production device has the advantages that the vibrating diaphragm is made of the waterproof and breathable material and has the characteristics of good waterproofness and breathability, so that the sound production device is good in waterproof performance, in addition, the sound production inner cavity can perform air leakage through the vibrating diaphragm, the air pressure balance between the sound production inner cavity and the outside is guaranteed, and the vibration reliability of the sound production device is improved.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (6)
1. A sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, and the magnetic circuit system drives the vibration system to vibrate and sound; the vibration system comprises a vibrating diaphragm fixed on one side of the basin frame, which is far away from the magnetic circuit system, a voice coil used for driving the vibrating diaphragm to vibrate and sound, and a ball top, and the vibrating diaphragm, the basin frame and the magnetic circuit system jointly enclose a sound-producing inner cavity; the vibrating diaphragm includes vibration portion, by the ring portion that rolls over that the periphery of vibration portion outwards buckles to extend and by roll over the ring portion and keep away from the fixed part that the lateral buckling of vibration portion extended, the fixed part is fixed in the basin frame, the ball top subsides are located vibration portion, its characterized in that, the vibrating diaphragm is made for waterproof ventilative material, the sound production inner chamber passes through roll over the ring portion and carry out air leakage.
2. The sounding device according to claim 1, wherein the diaphragm is made of a teflon material or a teflon composite material.
3. The sound production device of claim 1, wherein the cross section of the collar portion is an arc-shaped structure recessed toward the sound production cavity.
4. The sound production device according to claim 1, further comprising an upper cover plate covering the diaphragm at a side away from the basin frame and fixed to the basin frame, the upper cover plate having a sound outlet extending therethrough; the upper cover plate and the vibrating diaphragm jointly enclose a front sound cavity, the sound outlet communicates the front sound cavity with the outside, and the sound production inner cavity forms air leakage through the vibrating diaphragm and the front sound cavity.
5. The sound production device according to claim 1, wherein the magnetic circuit system comprises a magnetic bowl fixed on a side of the frame away from the diaphragm, a main magnetic steel fixed on a side of the magnetic bowl close to the diaphragm, and an auxiliary magnetic steel fixed on a side of the magnetic bowl close to the diaphragm and spaced from the main magnetic steel to form a magnetic gap, and the voice coil is inserted into the magnetic gap.
6. The sound-producing device according to claim 5, further comprising a ventilation damping member, wherein the magnetic bowl is provided with a leakage hole penetrating through the magnetic bowl, the ventilation damping member is attached to the magnetic bowl and completely covers the leakage hole, and the sound-producing inner cavity performs air leakage through the ventilation damping member at the position of the leakage hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237932.7A CN111065021B (en) | 2019-12-06 | 2019-12-06 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911237932.7A CN111065021B (en) | 2019-12-06 | 2019-12-06 | Sound production device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111065021A CN111065021A (en) | 2020-04-24 |
| CN111065021B true CN111065021B (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911237932.7A Expired - Fee Related CN111065021B (en) | 2019-12-06 | 2019-12-06 | Sound production device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111065021B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112188372B (en) * | 2020-09-23 | 2022-04-29 | 瑞声新能源发展(常州)有限公司科教城分公司 | Speaker and electronic equipment |
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- 2019-12-06 CN CN201911237932.7A patent/CN111065021B/en not_active Expired - Fee Related
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| CN101374373A (en) * | 2007-08-20 | 2009-02-25 | 雅马哈株式会社 | Vibration sensor |
| CN101426165A (en) * | 2007-10-29 | 2009-05-06 | 财团法人工业技术研究院 | Single body construction for loudspeaker |
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| CN111065021A (en) | 2020-04-24 |
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