CN111163406B - Sound production device and speaker module - Google Patents
Sound production device and speaker module Download PDFInfo
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- CN111163406B CN111163406B CN201911396895.4A CN201911396895A CN111163406B CN 111163406 B CN111163406 B CN 111163406B CN 201911396895 A CN201911396895 A CN 201911396895A CN 111163406 B CN111163406 B CN 111163406B
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- 238000004519 manufacturing process Methods 0.000 title abstract description 30
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000001746 injection moulding Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
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- 238000010586 diagram Methods 0.000 description 7
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- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
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- 230000009471 action Effects 0.000 description 1
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- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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- 238000005476 soldering Methods 0.000 description 1
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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
- H04R9/025—Magnetic circuit
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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
- H04R9/04—Construction, mounting, or centering of coil
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a device and a loudspeaker module, which comprises a shell and a cover plate covered on the shell, wherein the cover plate comprises a magnetic conduction plate and a connecting plate made of plastic materials and arranged around the periphery of the magnetic conduction plate, a leakage hole communicated with the inner space and the outer space of a sounding device is arranged on the connecting plate, a ventilating spacer is covered on the leakage hole, and the magnetic conduction plate, the connecting plate and the ventilating spacer are integrally molded by injection. The invention can prevent the ventilating separator from falling off and simplify the manufacturing process of the magnetic conductive plate, the connecting plate and the ventilating separator through the magnetic conductive plate, the connecting plate and the ventilating separator which are integrally injected.
Description
Technical Field
The invention relates to the technical field of acoustics, in particular to a sound production device and a loudspeaker module.
Background
The speaker module is widely applied to electronic products with sound production requirements as a commonly used sound production device. In order to adapt to the miniaturization trend of electronic products, the speaker module is gradually miniaturized. However, the volume reduction will affect the acoustic performance of the speaker module. Therefore, in order to ensure the acoustic performance of the speaker module, sound absorption particles are usually filled in the rear sound cavity of the speaker module, and the acoustic performance of the speaker module is maintained or improved by increasing the virtual acoustic volume of the rear sound cavity.
The sound production function of speaker module is accomplished through the speaker monomer that sets up in it, includes vibration subassembly and magnetic circuit subassembly in the monomer. Inhale the vibration that sound granule got into the speaker monomer will hinder the vibration subassembly to influence the free normal sound production of speaker. Therefore, a sealed space is required to be formed in the speaker unit to prevent the entry of sound-absorbing particles. The cover plate of the loudspeaker monomer opposite to the rear sound cavity is provided with air holes, and air flow enters and exits the rear sound cavity through the air holes. The cover plate is structurally characterized in that mesh cloth is bonded on the magnetic conduction plate, and partial area of the edge of the magnetic conduction plate is bent and then is in sealing connection with the shell of the loudspeaker monomer. The magnetic conduction plate is firstly bonded with the mesh cloth, and then the bonded cover plate is hermetically connected with the shell. This structure has the problems of low connection strength, complicated manufacturing process, and the like.
Therefore, it is necessary to provide a new sealing structure to solve the problem of complicated manufacturing process.
Disclosure of Invention
The invention aims to provide a sound production device and a loudspeaker module, and solves the problems that a sealing structure in the prior art is complex in manufacturing process and the like.
A sounding device comprises a shell and a cover plate covering the shell,
the cover plate comprises a magnetic conduction plate and a connecting plate made of plastic materials and arranged around the magnetic conduction plate, a leakage hole communicated with the inner space and the outer space of the sounder is arranged on the connecting plate, a breathable isolating piece is covered on the leakage hole,
the magnetic conduction plate, the connecting plate and the breathable isolating piece are integrally formed in an injection molding mode.
Further, the magnetic conduction plate is of a cross-shaped structure, and the breathable partition is arranged at a right-angle corner close to the cross-shaped structure.
Further, the breathable isolating piece is mesh or metal net.
Furthermore, the edge of the magnetic conduction plate is provided with at least one trapezoidal groove, and the connecting plate is formed around the magnetic conduction plate in an injection molding mode and correspondingly forms a lug at the trapezoidal groove.
Further, one surface of the magnetic conduction plate, which is far away from the shell, is coplanar with the surface of the connecting plate.
Further, the housing includes a body portion and a positioning portion provided to protrude from the body portion;
the connecting plate includes the joint portion of being connected with the magnetic conduction board and the fixed part of being connected with casing sealing, just the fixed part with the casing joint is fixed.
Further, the fixing portion is formed by protruding an edge of the combining portion toward the housing direction.
Furthermore, the sounding device further comprises a centering branch sheet used for elastically supporting the voice coil, the inner end of the centering branch sheet is connected with the voice coil, the outer end of the centering branch sheet is connected with the shell, a pad structure exposed on the outer surface of the shell is arranged on the outer end of the centering branch sheet, and a part of the outer end is pressed on the shell by the fixing part.
Further, the shell is of a rectangular structure;
the corner of the shell is provided with an installation part for fixing the pad structure;
the casing is including a location portion that is located the bight, the connecting plate is including being located two fixed parts of location portion both sides, two fixed parts with a location portion encircles the installation department sets up.
The utility model provides a loudspeaker module, includes the module shell with install in the module shell as above any one sound production device, sound production device will space division in the module shell is preceding sound chamber and back sound chamber, back sound intracavity is filled with and inhales the sound granule, ventilative separator is used for preventing inhale the sound granule and get into the inner space of sound production device.
The technical scheme of the invention has the beneficial effects that: the magnetic conduction plate, the shell plate and the isolation mesh cloth are integrally molded, so that the condition that the isolation mesh cloth falls off from the shell is avoided, and the installation process of the cover plate and the shell is simplified.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is an exploded view of a prior art speaker cell;
fig. 2 is a schematic structural diagram of a speaker unit in the prior art;
fig. 3 is an exploded view of a sound generating device in a single body according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a single sound generating device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a single sound generating device according to an embodiment of the present invention;
fig. 6 is a schematic view of a connection structure of a magnetic conduction plate and a shell plate according to an embodiment of the invention;
FIG. 7 is a schematic diagram of the positioning portion and the mounting portion according to an embodiment of the present invention;
the figures are labeled as follows: 10-a magnetic conductive plate; 101-a groove; 20-a gas permeable barrier; 30-centering support pieces; 40-a pad; 50-a magnet; 60-a housing; 70-washer; 80-a voice coil; 90-Dome; 100-a diaphragm; 110-a connecting plate; 1101-a fixed part; 1102-a bump; 120-a positioning section; 130-a mounting portion.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the prior art, the sound production device needs to be provided with a cover plate with a mesh cloth to prevent sound absorption particles in a rear sound cavity of the loudspeaker module from entering the sound production device. Fig. 1 shows an exploded view of a prior art sound-emitting device, and fig. 2 shows a schematic structural diagram of the prior art sound-emitting device. Referring to fig. 1 or fig. 2, the cover plate is structured such that a mesh 20 is bonded to a magnetic conductive plate 10, and a partial region of an edge of the magnetic conductive plate is bent to form a sealed connection with a housing 60 of a speaker. This structure has the problems of low connection strength, complicated manufacturing process, and the like. Meanwhile, as shown in fig. 2, the bent portion of the magnetic conductive plate 10 is close to the centering leg 30, and the centering leg 30 is provided with a PCB for electrically connecting the voice coil 80 and an external circuit. When the PCB is electrically connected to an electronic product, the solder is easily connected to the flux guide plate 10, which brings a risk of short circuit. Therefore, a new sealing structure is needed to solve the problems of complicated manufacturing process and short circuit risk of the structure existing at present.
An exploded view of an embodiment according to the present invention is shown in fig. 3. Fig. 4 is a schematic structural diagram of a sound production device according to an embodiment of the invention. Fig. 5 shows a schematic structural diagram of a sound production device according to an embodiment of the invention. Fig. 4 and 5 are structural views taken from the upper and lower sides of the sound emitting device, respectively. Fig. 6 is a schematic view illustrating a connection structure between the magnetic conductive plate 10 and the connection plate 110 according to an embodiment of the present invention.
The invention provides a sounding device, which comprises a shell and a cover plate arranged on the shell in a covering manner,
the cover plate comprises a magnetic conduction plate and a connecting plate made of plastic materials and arranged around the magnetic conduction plate, a leakage hole communicated with the inner space and the outer space of the sounder is arranged on the connecting plate, a breathable isolating piece is covered on the leakage hole,
the magnetic conduction plate, the connecting plate and the breathable isolating piece are integrally formed in an injection molding mode.
Specifically, as shown in the exploded view of fig. 3, a centering branch 30 and a diaphragm 100 are disposed in the inner cavity of the sounding device. The spider 30 is for elastically supporting the voice coil 80, and is provided at four corner positions of the sound generating device. The sounding device is also internally provided with a magnet 50, wherein the magnet 50 is divided into a center magnet and a side magnet, and a magnetic gap is formed between the center magnet and the side magnet. The voice coil 80 is suspended within the magnetic gap formed by the magnet 50. The voice coil 80 is energized with current and vibrates under the action of the magnetic field, thereby driving the diaphragm 100 connected with the voice coil to vibrate. The diaphragm 100 vibrates to make a sound.
Specifically, the apron includes magnetic conduction plate 10 and encircles the connecting plate 110 that sets up at the peripheral plastics material of magnetic conduction plate 10, be provided with the hole of revealing of intercommunication sound production device inner and outer space on the connecting plate 110, reveal the hole and coat and have ventilative separator 20, magnetic conduction plate 10 and connecting plate 110 and ventilative separator 20 integrated injection moulding. The mould is put into to magnetic conduction board 10 and isolation screen cloth as the base member to mode through moulding plastics makes magnetic conduction board 10 and ventilative separator 20 and adopt the connecting plate 110 of plastics material formation to mould plastics into an organic whole structure, be equipped with the hole of revealing of the interior outer space of intercommunication sound production device on the connecting plate 110, ventilative separator 20 covers the hole of revealing, with traditional on will breathe freely separator 20 and directly paste and compare at the hole periphery of revealing, can avoid taking place ventilative separator 20 and drop the condition that gets off from the casing along with the accumulation of time, improved ventilative separator 20 and connecting plate 110's stability.
Specifically, the connecting plate 110 is made of plastic. The present invention utilizes plastic to form the connection plate 110, and the connection plate 110 is in contact with the centralizer 30 to avoid the risk of short circuit. Meanwhile, the plasticity of the plastic is good, the plastic has higher comprehensive mechanical property after injection molding, the density is smaller than that of metal, and the weight of a generator can be reduced. Alternatively, the connection plate 110 may be made of PC (polycarbonate), but the invention is not limited thereto.
Specifically, magnetic conductive plate 10, connecting plate 110 and ventilative separator 20 integrative injection moulding, compare with traditional upper cover plate and casing assembly, very big simplification work flow, at the apron and the casing assembly in-process, directly will mould plastics integrative magnetic conductive plate 10, connecting plate 110 and ventilative separator 20 and casing assembly, improved assembly efficiency.
Optionally, magnetic conduction plate 10 is the cruciform structure, ventilative separator sets up and is being close to cruciform structure's right angle corner.
Referring to fig. 3, the magnet 50 of the present invention includes a center magnet and side magnets according to an embodiment of the present invention. The outer contour of the magnet is approximately cross-shaped. The magnetic conductive plate 10 is designed to have a cross-shaped structure corresponding to the outer contour of the magnet 50, which is beneficial for the magnetic conductive plate 10 to correct the magnetic path, so that the magnetic circuit has stronger magnetic field intensity. Thereby, the sensitivity of the voice coil 80 can be increased, thereby improving the acoustic performance. Optionally, the breathable spacers 20 of the present invention are positioned adjacent to the right angle turns of the cruciform structure. The number of breathable spacers 20 may be four, arranged close to the right-angled turns of the cruciform structure. The area of the ventilation isolating piece 20 can be increased by arranging the ventilation isolating piece 20 at the corner of the cross-shaped structure, which is beneficial to the circulation of the air in the inner cavity of the sounder and the outside air. The four breathable partitions 20 are arranged to fully utilize the area of the corners of the cruciform structure. The four breathable separators 20 which are symmetrically arranged can enable gas to enter and exit the rear sound cavity from multiple directions, so that the gas exchange efficiency is improved.
Optionally, the breathable separator is a mesh or a metal mesh.
The sounder generally can set up in the speaker module, and the sounder divides into preceding sound chamber and back sound chamber with the inner chamber of speaker module, the back sound intracavity is filled with inhales the sound granule, and the purpose that ventilative isolator 20 set up prevents that the sound granule of inhaling in the back sound chamber enters into the inner chamber of sounder, still guarantees the circulation of air in the sounder inner chamber and the back sound chamber simultaneously, and general ventilative isolator 20 is the screen cloth, also can be the metal mesh, does not prescribe a limit to ventilative isolator 20's selection material.
Optionally, the border of magnetic conduction board is equipped with at least one trapezoidal recess, the interior border of coverboard is equipped with down trapezoidal recess, the connecting plate is around magnetic conduction board injection moulding and trapezoidal groove department corresponds and forms the lug.
According to an embodiment of the present invention, as shown in fig. 5 or fig. 6, the edge of the magnetic conducting plate 10 is provided with one or more trapezoidal grooves 101, and the connecting plate 110 is formed with inverted trapezoidal protrusions 1102 at the positions of the grooves 101 around the magnetic conducting plate 10 during the molding process. The inverted trapezoidal protrusion 1102 is connected with the trapezoidal groove 101 in a matching manner. Specifically, when the magnetic conductive plate 10 and the connecting plate 110 are integrally molded, the injection molding material of the connecting plate 110 is filled in the trapezoidal groove 101 at the edge of the magnetic conductive plate 10. After the injection molding is completed, the inverted trapezoidal protrusion 1102 formed in the trapezoidal groove 101 and the trapezoidal groove 101 form a lock catch type connection. The structural design can greatly improve the connection strength of the magnetic conduction plate 10 and the connecting plate 110. As an embodiment, the plurality of trapezoidal grooves 101 are symmetrically distributed with respect to the center of the magnetic conductive plate 10, and the inverted trapezoidal protrusions 1102 formed in this way are also symmetrically distributed with respect to the center of the magnetic conductive plate 10. The symmetry of the single structure of the sound generating device can be improved by setting the lock catch type connecting structures to be symmetrically distributed, and the uniformity of the mass distribution of the single body of the sound generating device is improved.
Optionally, a face of the magnetic conductive plate away from the housing is coplanar with a surface of the connecting plate.
According to an embodiment of the present invention, as shown in fig. 5 or fig. 6, a hollow area is provided in the middle of the connection plate 110, and the connection plate 110 is located in the hollow area of the shell plate. The magnetic conductive plate 10 and the connecting plate 110 are formed in this structural relationship as a single piece. This structure can improve the connection strength between the magnetic conductive plate 10 and the connection plate 110. Optionally, the magnetic conductive plate 10 is disposed through the shell plate, so as to prevent the connecting plate 110 from covering the magnetic conductive plate 10 and affecting the magnetic path correction of the magnetic conductive plate 10. One surface of the magnetic conduction plate 10 far away from the shell is coplanar with the surface of the connecting plate 110. This surface of the magnetic conducting plate 10 is coplanar with the surface of the connecting plate 110 that is in contact with the rear acoustic cavity. The structure can reduce the thickness of the injection molding integrated piece of the magnetic conduction plate 10 and the connecting plate 110 to the maximum extent, thereby reducing the volume of the sound production device, reducing the occupied volume of the sound production device in the loudspeaker module and increasing the volume of the rear sound cavity. The volume of the rear sound cavity is increased, so that the acoustic performance of the sounder can be effectively improved.
Optionally, the housing includes a body portion and a positioning portion protruding from the body portion;
the connecting plate includes the joint portion of being connected with the magnetic conduction board and the fixed part of being connected with casing sealing, just the fixed part with the casing joint is fixed.
The shell comprises a body part and a positioning part 120, an inner cavity is formed in the body part to provide an accommodating space for a magnetic circuit system, a vibration system and the like of the sound production device, the positioning part 120 is clamped and fixed with a fixing part 1101 on the connecting plate 110, and the assembling precision of the connecting plate 110 and the shell is improved.
Optionally, the fixing portion is formed by protruding an edge of the combining portion toward the housing.
The fixing portion 1101 and the combining portion are of an integral structure, and the fixing portion 1101 is formed by protruding the edge of the combining portion towards the housing direction. The fixing portion 1101 is directly formed by injection molding, and the fixing portion 1101 protrudes towards the shell along the edge of the combining portion without other technical means, so that the operation process is simplified, and the assembly efficiency of the cover plate and the shell is improved.
Optionally, the sounding device further includes a centering branch piece for elastically supporting the voice coil, an inner end of the centering branch piece is connected to the voice coil, an outer end of the centering branch piece is connected to the housing, a pad structure exposed on an outer surface of the housing is disposed on the outer end of the centering branch piece, and a portion of the outer end is pressed on the housing by the fixing portion.
One end of the damper 30 is disposed in the housing and connected to the voice coil 80, the other end of the damper 30 is exposed outside the housing and is pressed on the housing by the fixing portion 1101, wherein a pad 40 structure is disposed on the damper 30 exposed outside the housing, and the pad 40 structure is used for communicating with an external circuit.
Optionally, the housing is of a rectangular structure;
the corner of the shell is provided with an installation part for fixing the pad structure;
the casing is including a location portion that is located the bight, the connecting plate is including being located two fixed parts of location portion both sides, two fixed parts with a location portion encircles the installation department sets up.
The casing is the rectangle structure, the casing also can be other shape structures, does not prescribe a limit to the shape structure of casing, and when the casing was the rectangle structure, the casing can have four bights, be equipped with installation department 130 on the bight, installation department 130 is used as fixed pad 40 structure, and the bight that is located the casing is provided with location portion 120, the last being located of connecting plate 110 the fixed part 1101 of location portion 120 both sides with location portion 120 encircles the setting of installation department 130, under this structural style, can avoid magnetic conductive plate 10 contact or be close to circuit structure, when preventing pad 40 and outer circuit welded connection, soldering tin flows to magnetic conductive plate 10, leads to circuit and magnetic conductive plate 10 electricity to communicate to take place the short circuit problem.
The utility model provides a loudspeaker module, includes the module shell with install in the module shell as above sounder, sounder will space division in the module shell is preceding sound chamber and back sound chamber, the back sound intracavity is filled with inhales the sound granule, ventilative separator 20 is used for preventing inhale the sound granule and get into sounder's inner space.
Specifically, the sounder device also includes washer 70, dome90, and a housing. An inner cavity is formed in the module housing 60, the sound production device divides the inner cavity into a front sound cavity and a rear sound cavity, and sound absorption particles are filled in the rear sound cavity. The sound absorbing particles are loose porous structures that are capable of adsorbing or emitting gas. The sound production device can arouse the gas pressure change in back sound chamber at the phonation in-process, inhales the partial gas when sound granule can absorb atmospheric pressure and rise through the setting to reduce the atmospheric pressure in back sound chamber, inhale the pressure that sound granule made the too low back sound chamber of pressure through release gas simultaneously and rise. Equivalently, the sound-absorbing particles increase the virtual acoustic volume of the rear sound cavity, so that the loudspeaker module has higher response sensitivity. Be provided with the hole of revealing of the interior outer space of intercommunication sound production device on the connecting plate 110, be provided with ventilative separator 20 on the hole of revealing, ventilative separator 20 can allow the gas in the sound production device inner chamber to exchange with the gas in the back sound chamber simultaneously, prevents to inhale the sound granule and enters into the inner space of generator guarantees that speaker module normally works.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The utility model provides a sounding device, includes that casing and lid are located the apron of casing, its characterized in that:
the cover plate comprises a magnetic conduction plate and a connecting plate made of plastic materials and arranged around the periphery of the magnetic conduction plate, a leakage hole communicated with the inner space and the outer space of the sounding device is arranged on the connecting plate, a ventilating partition is covered on the leakage hole,
the integrated injection molding of magnetic conduction board, connecting plate and ventilative separator, the border of magnetic conduction board is equipped with at least one trapezoidal recess, the connecting plate is around magnetic conduction board injection molding and be in trapezoidal recess department corresponds and forms the lug.
2. The sounder device according to claim 1, wherein the magnetic conductive plate is a cross-shaped structure, and the air permeable spacer is disposed proximate a right angle turn of the cross-shaped structure.
3. A sound-emitting device according to claim 1 or 2, wherein the gas-permeable barrier is a mesh or a metal mesh.
4. The sounder device according to claim 1, wherein a face of the magnetic conductive plate remote from the housing is coplanar with a surface of the connecting plate.
5. The sounder device according to claim 1, wherein the housing comprises a body portion and a positioning portion disposed projecting from the body portion;
the connecting plate includes the joint portion of being connected with the magnetic conduction board and the fixed part of being connected with casing sealing, just the fixed part with the casing joint is fixed.
6. The sounder device according to claim 5, wherein the securing portion is formed by an edge of the engaging portion projecting toward the housing.
7. The sounding device according to claim 6, further comprising a supporting piece for elastically supporting the voice coil, wherein an inner end of the supporting piece is connected to the voice coil, an outer end of the supporting piece is connected to the housing, a pad structure exposed on an outer surface of the housing is disposed on an outer end of the supporting piece, and a portion of the outer end is pressed onto the housing by the fixing portion.
8. The sounder device according to claim 7, wherein the housing is of rectangular configuration;
the corner of the shell is provided with an installation part for fixing the pad structure;
the casing is including a location portion that is located the bight, the connecting plate is including being located two fixed parts of location portion both sides, two fixed parts with a location portion encircles the installation department sets up.
9. A loudspeaker module comprising a module housing and a sound device according to any one of claims 1 to 8 mounted in the module housing, wherein the sound device divides the space in the module housing into a front sound chamber and a rear sound chamber, the rear sound chamber is filled with sound-absorbing particles, and the air-permeable partition is configured to prevent the sound-absorbing particles from entering the interior space of the sound device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396895.4A CN111163406B (en) | 2019-12-30 | 2019-12-30 | Sound production device and speaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911396895.4A CN111163406B (en) | 2019-12-30 | 2019-12-30 | Sound production device and speaker module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111163406A CN111163406A (en) | 2020-05-15 |
| CN111163406B true CN111163406B (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911396895.4A Active CN111163406B (en) | 2019-12-30 | 2019-12-30 | Sound production device and speaker module |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212992533U (en) * | 2020-07-09 | 2021-04-16 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
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| CN206542566U (en) * | 2017-03-01 | 2017-10-03 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN207531073U (en) * | 2017-11-22 | 2018-06-22 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN207720341U (en) * | 2017-10-23 | 2018-08-10 | 上海润欣科技股份有限公司 | Loudspeaker enclosure |
| CN208609182U (en) * | 2018-08-30 | 2019-03-15 | 歌尔科技有限公司 | A kind of sounding device |
| CN109495826A (en) * | 2018-12-31 | 2019-03-19 | 瑞声声学科技(深圳)有限公司 | Loudspeaker enclosure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW507465B (en) * | 2000-12-28 | 2002-10-21 | Tai-Yan Kam | Transparent planar speaker |
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