CN111741403B - Speaker module and electronic equipment - Google Patents
Speaker module and electronic equipment Download PDFInfo
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- CN111741403B CN111741403B CN202010834900.1A CN202010834900A CN111741403B CN 111741403 B CN111741403 B CN 111741403B CN 202010834900 A CN202010834900 A CN 202010834900A CN 111741403 B CN111741403 B CN 111741403B
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- 238000009434 installation Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000030279 gene silencing Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
- H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a loudspeaker module and electronic equipment, wherein the loudspeaker module comprises a shell, a loudspeaker single body and a damping block, the shell is provided with an inner cavity, and the shell is provided with a leakage hole; the loudspeaker monomer is arranged in the inner cavity, and the inner cavity is divided into a front sound cavity and a rear sound cavity, and the rear sound cavity is communicated with the leakage hole; the damping block covers the leakage hole; the damping block is provided with a first hole and an air flow channel; the axis of the first hole and the axis of the leakage hole are arranged at intervals; the air flow channel is communicated with the leakage hole and the first hole; at least one groove is concavely arranged on the cavity wall of the airflow channel; before the air flow is discharged to the outside, the air flow is buffered and denoised in the air flow channel.
Description
Technical Field
The invention relates to the technical field of speakers, in particular to a speaker module and electronic equipment.
Background
The speaker module is an important acoustic component of the portable electronic device, is used for completing the conversion between an electric signal and a sound signal, and is an energy conversion device. The speaker module includes the shell and accepts the speaker monomer in the shell, and the speaker monomer is two cavitys in preceding sound chamber and back sound chamber with whole module inner chamber separation, and preceding sound chamber intercommunication speaker module's external world.
In the working process of a loudspeaker product, the electrified voice coil reciprocates under the action of electromagnetic force to enable air in the rear sound cavity to be continuously compressed, airflow pulsation noise generated by air flow can cause unstable acoustic performance and noise, and displacement is asymmetric.
In the related art, a leakage hole is formed in the rear sound cavity, and the mesh cloth is bonded at the position of the leakage hole to reduce the airflow pulsation noise, but the damping effect is limited, the airflow disturbance sound and the flow velocity are still large, and the acoustic requirement cannot be met.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker module and electronic equipment, aiming at further reducing airflow pulsation noise and meeting acoustic requirements.
In order to achieve the above object, the speaker module of the present invention comprises:
the shell is provided with an inner cavity and is provided with a leakage hole;
the loudspeaker single body is arranged in the inner cavity and divides the inner cavity into a front sound cavity and a rear sound cavity, and the rear sound cavity is communicated with the leakage hole; and
the damping block covers the leakage hole and is provided with a first hole and an air flow passage; the axis of the first hole and the axis of the leakage hole are arranged at intervals; the gas flow passage communicates the leakage hole and the first hole; wherein, the cavity wall of the airflow channel is concavely provided with at least one groove.
In an embodiment of the present invention, at least one sound-absorbing plate is disposed in the air flow channel, a periphery of the sound-absorbing plate is connected to a cavity wall of the air flow channel, the sound-absorbing plate is disposed perpendicular to an axial direction of the air flow channel, and the sound-absorbing plate is provided with a plurality of sound-absorbing holes.
In an embodiment of the present invention, a wall of the groove and a wall of the airflow channel enclose a sound-deadening chamber, and at least one of the sound-absorbing panels is disposed in the sound-deadening chamber.
In an embodiment of the invention, a second hole is concavely arranged on one side of the damping block facing the housing corresponding to the leakage hole, and the airflow channel is communicated with the leakage hole through the second hole.
In an embodiment of the present invention, the airflow channel is arc-shaped, circular, L-shaped, square or spiral.
In an embodiment of the present invention, the airflow channel is spiral or L-shaped, the airflow channel includes a plurality of straight sections and at least one curved section, and the plurality of straight sections are sequentially connected and communicated through the curved sections; the straight channel sections positioned at the two ends are respectively connected with the first hole and the second hole; the cavity wall of at least one straight section is sunken to the direction of keeping away from the straight section axis and is formed at least one recess.
In an embodiment of the present invention, an axis of the first hole is connected to the adjacent straight section at an included angle;
and/or the second hole is connected with the axis of the adjacent straight section in an included angle.
In an embodiment of the present invention, a side surface of the damping block facing the housing is concavely provided with a damping groove, and the damping groove and the housing enclose to form the airflow channel.
In an embodiment of the present invention, the damping block is attached to the housing;
and/or the damping block is made of plastic or metal.
The invention further provides electronic equipment which comprises an equipment main body and the loudspeaker module, wherein the loudspeaker module is arranged on the equipment main body.
According to the technical scheme, before the air flow is discharged to the outside, the air flow is buffered and denoised in the air flow channel. The reactive impedance of the airflow path may act to reduce airflow pulsation noise. The air flow channel is communicated with the leakage hole and the first hole, and the axis of the first hole and the axis of the leakage hole are arranged at intervals, so that the flowing speed of air flow in the air flow channel can be reduced, the air flow channel has a buffering effect, the time of the air flow passing through the air flow channel is prolonged, and the air flow pulsation noise is further reduced; meanwhile, the cavity wall of the airflow channel is recessed towards the direction departing from the axis of the airflow channel to form at least one groove, so that the sectional area of the airflow channel at the groove is suddenly changed, the impedance of the airflow channel is increased, airflow pulsation noise is transmitted in the airflow channel according to the noise reduction principle, when the sectional area of the airflow channel is changed, the acoustic impedance is also changed, and at the position where the sectional area is changed, because the impedance is changed, one part of incident wave is reversely transmitted back, and the other part of incident wave is continuously transmitted in a new sectional pipeline, so that the purpose of inhibiting sound transmission is realized, and the purpose of reducing the airflow pulsation noise is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of a connection portion between a damping block and a housing according to an embodiment of a speaker module of the present invention;
FIG. 2 is a schematic view of the damping mass of FIG. 1;
FIG. 3 is a schematic view of a damping block of another embodiment of the speaker module of FIG. 1;
FIG. 4 is a schematic view of the sound-absorbing panel of FIG. 3;
fig. 5 is another angle view of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | | 11 | |
| 2 | | 21 | |
| 22 | | 23 | |
| 231 | | 233 | |
| 232 | | 3 | |
| 31 | Communicating | 4 | |
| 41 | Sound absorption hole | 5 | Anechoic chamber |
The implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a loudspeaker module.
In the embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3, and fig. 5, the speaker module includes a housing 1, a speaker unit, and a damping block 2, where the housing 1 has an inner cavity, and the housing 1 has a leakage hole 11; the loudspeaker monomer is arranged in the inner cavity, the inner cavity is divided into a front sound cavity and a rear sound cavity, and the rear sound cavity is communicated with the leakage hole 11; the damping block 2 covers the leakage hole 11; the damping block 2 is provided with a first hole 22 and an air flow channel 23; the axis of the first hole 22 and the axis of the leakage hole 11 are arranged at intervals; the gas flow passage 23 communicates the leak hole 11 and the first hole 22; wherein, the cavity wall of the air flow channel 23 is concavely provided with at least one groove 233.
In this embodiment, before the air flow is exhausted to the outside, the air flow channel is firstly buffered and denoised. The reactive impedance of the airflow path may act to reduce airflow pulsation noise. The airflow channel 23 is communicated with the leakage hole 11 and the first hole 22, and the axis of the first hole 22 and the axis of the leakage hole 11 are arranged at intervals, so that the flowing speed of the airflow in the airflow channel can be reduced, the airflow channel has a buffering effect, the time of the airflow passing through the airflow channel is prolonged, and the airflow pulsation noise is further reduced; meanwhile, in the embodiment, at least one groove is formed by sinking the cavity wall of the airflow channel in the direction departing from the axis of the airflow channel, so that the sectional area of the airflow channel at the groove is suddenly changed, the impedance of the airflow channel is increased, airflow pulsation noise is transmitted in the airflow channel according to the silencing principle, when the sectional area of the airflow channel is changed, the acoustic impedance is also changed, and in the place where the sectional area is changed, because the impedance is changed, a part of incident waves can be reversely transmitted back, and the other part of incident waves can be continuously transmitted in the airflow channel with the new section, so that the purpose of inhibiting the transmission of sound is realized, and the purpose of reducing the airflow pulsation noise is achieved.
The loudspeaker module comprises a shell 1, a loudspeaker single body and a damping block 2, wherein the shell 1 is provided with an inner cavity, and the shell 1 is provided with a leakage hole 11; the loudspeaker monomer is arranged in the inner cavity, the inner cavity is divided into a front sound cavity and a rear sound cavity, and the rear sound cavity is communicated with the leakage hole 11; technical means belonging to the prior art are available to the person skilled in the art.
In an embodiment of the present invention, the damping block 2 is disposed on an inner wall of the housing 1.
In this embodiment, the two ends of the airflow channel are respectively connected with the leakage hole 11 and the first hole 22. The air flow of the rear sound cavity enters the air flow channel from the first hole 22, is subjected to noise elimination and reduction through the air flow channel, and is discharged to the outside from the leakage hole 11.
In an embodiment of the present invention, a positioning groove is concavely disposed on an inner wall of the housing 1, the damping block 2 is disposed in the positioning groove, and the positioning groove is disposed to facilitate installation and positioning of the damping block 2.
In an embodiment of the present invention, a positioning table is convexly disposed on an inner wall of the housing 1, the damping block 2 is disposed in a positioning groove adapted to the positioning table, and the positioning table and the positioning groove are disposed to facilitate installation and positioning of the damping block 2.
In an embodiment of the present invention, the damping block 2 is disposed on an outer wall of the housing 1. In this embodiment, both ends of the gas flow path are connected to the leakage hole 11 and the first hole 22, respectively. The air flow of the rear sound cavity flows into the air flow channel from the leakage hole 11, is subjected to noise elimination and reduction through the air flow channel, and is discharged to the outside from the first hole 22.
In an embodiment of the present invention, a positioning groove is concavely disposed on an outer wall of the housing 1, the damping block 2 is disposed in the positioning groove, and the positioning groove is disposed to facilitate installation and positioning of the damping block 2.
In an embodiment of the present invention, a positioning table is convexly disposed on an outer wall of the housing 1, the damping block 2 is disposed in a positioning groove adapted to the positioning table, and the positioning table and the positioning groove are disposed to facilitate installation and positioning of the damping block 2.
In an embodiment of the invention, the leakage hole 11 is arranged adjacent to a corner of the housing 1.
In the present embodiment, the corner of the housing 1 refers to a position near the edge of the plane of the housing 1 where the leakage hole 11 is opened, and referring to fig. 1, fig. 1 shows a part of the housing 1, the part of the housing 1 has four corners, the position near the four corners is a corner, and the leakage hole 11 is opened at one corner of the part of the housing 1.
In an embodiment of the present invention, as shown in fig. 3 and 4, at least one sound-absorbing plate 4 is disposed in the air flow channel, a peripheral edge of the sound-absorbing plate 4 is connected to a cavity wall of the air flow channel, the sound-absorbing plate 4 is disposed perpendicular to an axial direction of the air flow channel, and a plurality of sound-absorbing holes 41 are formed in the sound-absorbing plate 4.
It will be appreciated that further sound damping is provided by the provision of the sound-absorbing panel 4. In this embodiment, inhale sound hole 41 aperture < 0.5mm, inhale sound hole sound quality little, the acoustic resistance is big, can be better play eliminate the effect of air current noise, can design different perforation simultaneously and compare to reach different damping effect, improve the yields of module.
In an embodiment of the present invention, as shown in fig. 3 and 5, the groove wall of the concave groove 233 and the wall of the airflow channel 23 enclose a sound-absorbing chamber 5, and at least one sound-absorbing plate 4 is disposed in the sound-absorbing chamber 5.
It can be understood that the recess of the airflow channel is defined as a silencing cavity, the sectional area of the silencing cavity 5 of the airflow channel 23 is larger, and the sound-absorbing plate 4 is arranged at the silencing cavity 5, so that the area of the sound-absorbing plate 233 is larger, and a better silencing effect is obtained.
In this embodiment, the periphery of the sound-absorbing plate 4 is connected with the wall of the sound-deadening chamber 5.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, a second hole 21 is recessed in a side of the damping block 2 facing the housing 1 corresponding to the leakage hole 11, and the air flow channel 23 communicates with the leakage hole 11 through the second hole 21.
It can be understood that a second hole 21 is concavely provided on a side of the damping block 2 facing the housing 1 corresponding to the leakage hole 11, and an axis of the first hole 22 is spaced from an axis of the leakage hole 11, that is, an axis of the first hole 22 is spaced from an axis of the second hole 21.
In the present embodiment, the first hole 22, the air flow passage 23, and the second hole 21 are integrally connected and communicated. The axial line of the first hole 22 and the axial line of the second hole 21 are arranged at intervals, so that the connecting line of the axial lines of the first hole 22, the airflow channel 23 and the second hole 21 is not a straight line, namely, the airflow path is not a straight line, the airflow can be ensured to turn at least two places in the flow path, the flow speed of the airflow is delayed, and the airflow pulsation noise is better reduced.
In one embodiment of the present invention, the second hole 21 is connected to the air flow channel 23 at an angle; the airflow can be turned, the flowing speed of the airflow is delayed, and the airflow pulsation noise is better reduced. In this embodiment, the second hole 21 is perpendicular to the airflow channel 23.
In other embodiments, the second hole 21 and the airflow channel 23 may be arranged coaxially, and to ensure that the axes of the second hole 21 and the first hole 22 are arranged at a distance, the airflow channel 23 has at least one bend to make the airflow turn.
In one embodiment of the present invention, the first hole 22 is connected to the air flow channel 23 at an angle; the airflow can be turned, the flowing speed of the airflow is delayed, and the airflow pulsation noise is better reduced. In this embodiment, the first hole 22 is perpendicular to the airflow channel 23.
In other embodiments, the second hole 21 and the air flow channel 23 may be coaxially arranged. To ensure that the axes of the second and first holes 21, 22 are spaced apart, the air flow passage 23 has at least one bend to turn the air flow.
In this embodiment, the damping block 2 is disposed on the inner wall of the housing 1, the second hole 21 is connected and communicated with the leakage hole 11, and the first hole 22 is connected and communicated with the rear acoustic cavity. The process that the airflow of the rear sound cavity flows to the outside is as follows: and is discharged to the outside after passing through the first hole 22, the air flow passage 23, the second hole 21, and the leakage hole 11 in this order.
In another embodiment, the damping block 2 is disposed on the outer wall of the housing 1, the second hole 21 is connected and communicated with the leakage hole 11, and the first hole 22 is connected and communicated with the outside. The process that the airflow of the rear sound cavity flows to the outside is as follows: and then discharged to the outside after passing through the leak hole 11, the second hole 21, the air flow passage 23, and the first hole 22 in this order.
In one embodiment of the present invention, as shown in fig. 1, 2 and 3, the air flow channel 23 is arc-shaped, circular, square or spiral.
It can be understood that by arranging the air flow channel 23 in one of an arc shape, a circular shape, an L shape, a square shape or a spiral shape, the length of the air flow channel 23 can be extended in the limited space of the damping block 2, so as to achieve the purpose of extending the moving path of the air flow in the air flow channel 23, and achieve the purpose of further effectively reducing the air flow pulsation noise, and simultaneously reduce the volume of the damping block 2.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, the air flow channel 23 is spiral or L-shaped, the air flow channel includes a plurality of straight sections 231 and at least one curved section 232, and the plurality of straight sections 231 are sequentially connected and communicated through the curved section 232; the two straight sections 231 at both ends are respectively connected with the second hole 21 and the first hole 22; at least one groove 233 is concavely arranged on the cavity wall of at least one straight channel section 231; wherein a cross-sectional area of a portion of the straight pipe section 231 adjacent to the pipe section 232 is smaller than a cross-sectional area of the curved pipe section 232.
In this embodiment, the plurality of straight sections 231 and the plurality of curved sections 232 are integrally connected and communicated with each other. The turning of the airflow in the curved section 232 can slow the flow rate of the airflow and better reduce the airflow pulsation noise. Meanwhile, the sectional area of the curved section 232 is larger than the sectional areas of the two straight sections 231 connected to the two ends of the curved section, so that the generation of eddy currents in the curved section 232 can be reduced, and airflow pulsation noise can be reduced better.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the airflow channel 23 is spiral-shaped, the number of the straight sections 231 is 5, the number of the curved sections 232 is 4, and the cavity wall of each straight section 231 is recessed in a direction away from the axis of the straight section to form at least one groove.
In an embodiment of the present invention, as shown in fig. 3, the number of the airflow channels is two, each of the airflow channels is L-shaped, the number of the straight sections 231 is 2, the number of the curved sections 232 is 1, and a cavity wall of each of the straight sections 231 is recessed in a direction away from an axis of the straight section to form at least one of the grooves.
In an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, an axis of the second hole 21 is connected with an axis of the adjacent straight section 231 at an included angle; the airflow can be turned, the flowing speed of the airflow is delayed, and the airflow pulsation noise is better reduced.
In this embodiment, the axis of the second hole 21 is perpendicular to the axis of the adjacent straight section 231.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, an axis of the first hole 22 is connected with an axis of the adjacent straight section 231 at an included angle. The airflow can be turned, the flowing speed of the airflow is delayed, and the airflow pulsation noise is better reduced.
In this embodiment, the axis of the first hole 22 is perpendicular to the axis of the adjacent straight section 231.
It is understood that the axis of the first hole 22 defined in the present invention is the axial centerline of the first hole 22, and the axis of the straight section 231 defined in the present invention is the longitudinal centerline of the straight section 231. The axis of the second bore 21 is defined in the present invention as the axial centerline of the second bore 21.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, the first hole 22 is recessed on a side of the damping block 2 facing away from the housing 1.
It will be appreciated that the side of the damping mass 2 facing the housing 1 is arranged parallel opposite to the side facing away from the housing 1.
One side of the damping block 2 facing the shell 1 is sunken to form the second hole 21, and the second hole 21 is connected and communicated with the leakage hole 11. When damping piece 2 was equipped with the inner wall of shell 1, first hole 22 is concavely located damping piece 2 deviates from one side of shell 1, the back sound chamber air current of being convenient for flows in first hole 22. When damping piece 2 was equipped with the outer wall of shell 1, first hole 22 is concavely located damping piece 2 deviates from one side of shell 1, the airflow outflow first hole 22 of being convenient for.
In an embodiment of the present invention, as shown in fig. 1 and 2, the second hole 21 is provided at a central position of a side of the damping block 2 facing the housing 1.
It can be understood that the second hole 21 is disposed at the center position of the damping block 2 facing to the side of the housing 1, that is, the leakage hole 11 corresponds to the center position of the damping block 2 facing to the side of the housing 1, and the acting force generated on the damping block 2 when the air flow flows out from the leakage hole 11 is balanced, so that the connection stability of the damping block 2 is improved, and the stability of the acoustic performance is ensured.
In an embodiment of the present invention, as shown in fig. 1, 2 and 3, a side surface of the damping block 2 facing the housing 1 is concavely provided with a damping groove, and the damping groove and the housing 1 enclose to form the airflow channel.
It can be understood that a damping groove is directly concavely arranged on one side surface of the damping block 2 facing the shell 1, so that grooving and machining forming are facilitated.
In an embodiment of the present invention, the second hole 21 penetrates the damping block 2.
In this embodiment, the first hole 22 is a hole that does not penetrate the damping block 2, and the second hole 21 is a hole that penetrates the damping block 2.
In an embodiment of the present invention, the damping block 2 is adhesively connected to the housing 1.
In this embodiment, as shown in fig. 1 and 5, a back adhesive layer 3 is disposed on one side of the housing 1 facing the damping block 2, the back adhesive layer 3 is provided with a communication hole 31 communicating with the leakage hole 11, and the damping block 2 is connected to the housing 1 through the back adhesive layer 3.
In this embodiment, realize the installation of damping piece 2 through gum layer 3, make the stable installation in shell 1 of damping piece 2, gum layer 3 plays sealed effect simultaneously.
In this embodiment, the periphery of the damping block 2 connected with the shell 1 can be glued and fixed, so that the bonding force between the damping block 2 and the shell 1 is increased, and the stability of the acoustic performance is ensured.
In an embodiment of the present invention, the damping block 2 is made of plastic or metal.
In this embodiment, the damping block 2 is made of plastic and is formed by injection molding, and the damping block 2 may also be made of steel and is formed by wire cutting and machining.
The invention also provides electronic equipment which comprises an equipment main body and the loudspeaker module. The specific structure of the speaker module refers to the above embodiments, and since the electronic device adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. Wherein, the speaker module is arranged on the equipment main body.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A speaker module, comprising:
the shell is provided with an inner cavity and is provided with a leakage hole;
the loudspeaker single body is arranged in the inner cavity and divides the inner cavity into a front sound cavity and a rear sound cavity, and the rear sound cavity is communicated with the leakage hole;
the damping block covers the leakage hole and is provided with a first hole and an air flow passage; the axis of the first hole and the axis of the leakage hole are arranged at intervals; the gas flow passage communicates the leakage hole and the first hole; the first hole is connected with the airflow channel in an included angle;
wherein, the cavity wall of the airflow channel is concavely provided with at least one groove.
2. The speaker module as claimed in claim 1, wherein at least one sound-absorbing plate is disposed in the airflow channel, the periphery of the sound-absorbing plate is connected to the wall of the airflow channel, the sound-absorbing plate is disposed perpendicular to the axial direction of the airflow channel, and the sound-absorbing plate is provided with a plurality of sound-absorbing holes.
3. The speaker module as claimed in claim 2, wherein the walls of the recess and the walls of the airflow passage enclose a sound-deadening chamber, and at least one of the sound-absorbing panels is disposed in the sound-deadening chamber.
4. The speaker module as claimed in claim 1, wherein a side of the damping block facing the housing is recessed with a second hole corresponding to the leakage hole, and the air flow passage communicates with the leakage hole through the second hole.
5. The speaker module as recited in claim 4, wherein the airflow channel is arcuate, L-shaped, circular, square, or spiral.
6. The speaker module as claimed in claim 5, wherein the airflow channel is spiral or L-shaped, the airflow channel comprises a plurality of straight sections and at least one curved section, and the plurality of straight sections are sequentially connected and communicated through the curved sections; the straight channel sections positioned at the two ends are respectively connected with the first hole and the second hole; at least one groove is concavely arranged on the cavity wall of at least one straight channel section.
7. The speaker module as claimed in claim 6, wherein the axis of said first hole is connected at an angle to the axis of the adjacent straight section;
and/or the axis of the second hole is connected with the axis of the adjacent straight section in an included angle.
8. The speaker module as claimed in any one of claims 1 to 7, wherein a side of the damping block facing the housing is recessed with a damping slot, and the damping slot and the housing enclose to form the airflow channel.
9. The speaker module as recited in claim 8, wherein said damping mass is adhesively attached to said housing;
and/or the damping block is made of plastic or metal.
10. An electronic apparatus comprising an apparatus main body and the speaker module according to any one of claims 1 to 9, the speaker module being provided to the apparatus main body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010834900.1A CN111741403B (en) | 2020-08-19 | 2020-08-19 | Speaker module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010834900.1A CN111741403B (en) | 2020-08-19 | 2020-08-19 | Speaker module and electronic equipment |
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| Publication Number | Publication Date |
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| CN111741403A CN111741403A (en) | 2020-10-02 |
| CN111741403B true CN111741403B (en) | 2020-12-08 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208908494U (en) * | 2018-05-04 | 2019-05-28 | 瑞声科技(新加坡)有限公司 | Loudspeaker mould group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103220610A (en) * | 2013-03-28 | 2013-07-24 | 山东共达电声股份有限公司 | MEMS (micro-electromechanical system) microphone and sound receiving device |
| CN109348380A (en) * | 2018-08-01 | 2019-02-15 | 歌尔股份有限公司 | Sounding device and portable terminal |
| KR102097472B1 (en) * | 2019-07-18 | 2020-04-06 | 주식회사 비에스이 | Canal type earphone with pressure balanced structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208908494U (en) * | 2018-05-04 | 2019-05-28 | 瑞声科技(新加坡)有限公司 | Loudspeaker mould group |
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