CN114650489A - Loudspeaker and sound production equipment - Google Patents

Loudspeaker and sound production equipment Download PDF

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Publication number
CN114650489A
CN114650489A CN202210240473.3A CN202210240473A CN114650489A CN 114650489 A CN114650489 A CN 114650489A CN 202210240473 A CN202210240473 A CN 202210240473A CN 114650489 A CN114650489 A CN 114650489A
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CN
China
Prior art keywords
voice coil
magnetic
loudspeaker
groove
speaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210240473.3A
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Chinese (zh)
Inventor
卞振峰
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Goertek Inc
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Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Priority to CN202210240473.3A priority Critical patent/CN114650489A/en
Publication of CN114650489A publication Critical patent/CN114650489A/en
Pending legal-status Critical Current

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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
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • 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

Abstract

The invention relates to the field of sound-electricity conversion, and particularly discloses a loudspeaker and sound production equipment, wherein the loudspeaker is provided with a cavity and comprises: a magnetic circuit unit having a first magnetic gap; and the vibration unit comprises a first voice coil assembly, the first voice coil assembly comprises a framework and a voice coil wound on the outer peripheral surface of the framework, the voice coil is arranged in the first magnetic gap, and the voice coil is positioned outside the cavity. This application sets up the voice coil loudspeaker voice coil in the outside of speaker cavity, and like this when the speaker during operation, the voice coil loudspeaker voice coil heat is along with the vibration work of vibrating element, and the air that directly produces when vibrating flows to the outside air, and then derives the voice coil loudspeaker voice coil heat fast, has improved the holistic heat-resisting capacity of speaker for the speaker can bear bigger voltage, thereby sends bigger loudness.

Description

Loudspeaker and sound production equipment
Technical Field
The invention relates to the technical field of sound-electricity conversion, and particularly discloses a loudspeaker and sound production equipment.
Background
The intelligent sound box is an important component of an intelligent home, is used for completing conversion between an electric signal and a sound signal, and is an energy conversion device. The existing intelligent sound box generally comprises a shell, a single loudspeaker, a circuit part for driving the sound box, and a rear sound cavity formed by sealing the whole inner cavity of the sound box through the single loudspeaker and the shell.
Along with the smart home miniaturization, the size of audio amplifier is littleer and smaller, and back sound cavity volume is littleer and smaller, and in order to make the audio amplifier can exert good performance, improves the loudness of audio amplifier, as the core component of audio amplifier, and is higher and higher to the requirement of speaker.
The technician typically requires the speaker cell to withstand higher voltages to ensure louder speaker and louder sound, but this tends to result in increased speaker size and higher voltages cause the speaker to heat up significantly, as in the conventional speaker 100，The structure is shown in FIG. 1, a loudspeaker 100，In operation, current passes through the voice coil 10， Voice coil 10，Under the action of the magnetic field, a force is generated to push the loudspeaker 100，Vibrates to produce sound, but at the same time the voice coil 10，As a resistor, also converts electricity into heat, at the loudspeaker 100，In operation, the voice coil 10，A large portion of the heat of (2) first enters the rear cavity 101，And then the heat passes through the rear cavity 101，The radiation enters the outside air. It can be seen that the conventional speaker 100，Is not effective in mounting the voice coil 10，Will cause the speaker 100 to operate，Overheating and product failure.
Disclosure of Invention
The present invention is directed to a speaker and a sound generating apparatus, which solves at least one of the above problems.
To achieve the above object, a first aspect of the present invention provides a speaker having a cavity, comprising:
a magnetic circuit unit having a first magnetic gap;
the vibration unit comprises a first voice coil assembly, the first voice coil assembly comprises a framework and a voice coil wound on the outer peripheral surface of the framework, the voice coil is arranged in the first magnetic gap, and the voice coil is located outside the cavity.
A second aspect of the invention provides a sound generating apparatus comprising a cavity with an opening and a speaker as described above, wherein the frame support is fixed at the opening of the cavity.
In addition, the speaker of the present invention may have the following additional features.
According to an embodiment of the present invention, the vibration unit further includes a frame, a first diaphragm, and an annular elastic wave, the magnetic circuit unit and the elastic wave are respectively disposed at two opposite ends of the frame, the first diaphragm is supported and fixed on the frame, a bottom end of the framework penetrates through a center hole of the first diaphragm and is connected to an inner edge of the elastic wave, and the frame, the first diaphragm, and the elastic wave together surround to form a cavity.
According to one embodiment of the present invention, the magnetic circuit unit includes:
the magnetic cover is provided with a first groove;
the first pole piece is arranged on the bottom wall of the first groove, and the voice coil surrounds the outer side of the first pole piece;
the first magnetic piece is superposed on the first pole piece, and the side wall of the first groove, the first pole piece and the first magnetic piece jointly surround to form the first magnetic gap.
According to an embodiment of the present invention, the magnetic circuit unit further includes:
the first pole piece is arranged between the first magnetic piece and the second magnetic piece.
According to one embodiment of the invention, the magnetic shield comprises:
the annular bracket is supported and fixed on the basin frame;
the magnetic conductive sheet is positioned in the middle of the bracket, and the first groove is formed in the magnetic conductive sheet;
and the connecting arm is connected with the bracket and the magnetic conductive sheet.
According to an embodiment of the invention, a second groove is formed on the magnetic conductive sheet and is opposite to the first groove, and the loudspeaker further comprises a high-pitch sound production unit arranged in the second groove.
According to an embodiment of the present invention, the treble generating unit includes:
the third magnetic piece is arranged on the bottom wall of the second groove;
the second pole piece is superposed on the third magnetic piece, and the side wall of the second groove, the third magnetic piece and the second pole piece jointly surround to form the second magnetic gap;
the second diaphragm is covered on the notch of the second groove;
and the second voice coil assembly is connected with the second diaphragm, and at least part of the second voice coil assembly is arranged in the second magnetic gap.
According to one embodiment of the present invention, the first diaphragm includes: the cone-shaped ketone body and the folding ring are connected with the edge of the ketone body, the first vibrating diaphragm is supported and fixed on the basin frame through the folding ring, the ketone body is provided with a first end portion and a second end portion which are arranged oppositely, the inner diameter of the first end portion is larger than that of the second end portion, and the folding ring is connected with the first end portion.
According to an embodiment of the present invention, the vibration unit further includes: and the dustproof cap is used for plugging the bottom end opening of the framework.
Compared with the prior art, the invention has the following beneficial effects:
this application sets up the voice coil loudspeaker voice coil in the outside of speaker cavity, so, when speaker during operation, the voice coil loudspeaker voice coil heat is along with the vibration work of vibration unit, and the air that directly produces when vibrating flows to the outside air, and then derives the voice coil loudspeaker voice coil heat fast, has improved the holistic heat-resisting ability of speaker for the speaker can bear bigger voltage, thereby sends bigger loudness.
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 a perspective view of a prior art loudspeaker;
FIG. 2 is a cross-sectional view of FIG. 1 (with the arrows indicating the direction of heat flow to the voice coil);
fig. 3 is a perspective view of a speaker 1 in an embodiment of the present invention;
fig. 4 is a perspective view of a speaker in an embodiment of the present invention 2;
fig. 5 is a sectional view of a speaker in an embodiment of the present invention;
FIG. 6 is a top view of a speaker in an embodiment of the present invention;
FIG. 7 is an exploded view of a speaker in an embodiment of the present invention;
fig. 8 is a cross-sectional view of a sound generating device in an embodiment of the present invention, with the arrows indicating the direction of heat flow from the voice coil.
Reference numerals:
loudspeaker 100， Voice coil 10， Rear cavity 101，The loudspeaker comprises a loudspeaker 100, a cavity 101, a first magnetic gap 10, a first voice coil assembly 11, a framework 110, a voice coil 111, a basin frame 12, a first vibrating diaphragm 13, a ketone body 130, a folded ring 131, an elastic wave 14, a dust cap 15, a magnetic cover 16, a support 160, a magnetic conductive sheet 161, a connecting arm 162, a first pole piece 17, a first magnetic piece 18, a second magnetic piece 19, a third magnetic piece 20, a second pole piece 21, a second vibrating diaphragm 22, a second voice coil assembly 23, a second magnetic gap 24, an external terminal 24, a sound-producing device 300, a cavity 30 and a buffer sealing structure 31.
The implementation, functional features and advantages of the objects 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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
A loudspeaker 100 in some embodiments of the invention is described below with reference to fig. 3-7.
As shown in fig. 3-7, one embodiment of the present invention provides a speaker 100, the speaker 100 having a cavity 101, the speaker 100 comprising: magnetic circuit unit, vibration unit and high pitch sound production unit, wherein, high pitch sound production unit installs on the magnetic circuit unit, and magnetic circuit unit, vibration unit and high pitch sound production unit assemble together with coaxial mode, and the magnetic circuit unit has first magnetic gap 10, and the vibration unit includes first voice coil assembly 11, and first voice coil assembly 11 includes skeleton 110 and the voice coil 111 of coiling in skeleton 110 outer peripheral face, and voice coil 111 disposes in first magnetic gap 10, and voice coil 111 is located the outside of cavity.
Compared with the prior art, this application sets up the voice coil loudspeaker voice coil in the outside of speaker cavity, so, when speaker during operation, the voice coil loudspeaker voice coil heat is along with the vibration work of vibration unit, directly during the air flow that produces when vibrating arrives the outside air, because the convection heat transfer efficiency of this application is greater than the conduction and the radiation heat transfer of traditional speaker, consequently can derive the voice coil loudspeaker voice coil heat fast, improved the holistic heat-resisting ability of speaker, make the speaker can bear bigger voltage, thereby send bigger loudness.
In this embodiment, with continued reference to fig. 5, the vibration unit further includes a basin frame 12, a first vibrating diaphragm 13, an annular elastic wave 14, and a dust cap 15, the magnetic circuit unit and the elastic wave 14 are respectively disposed at two opposite ends of the basin frame 12, the first vibrating diaphragm 13 is supported and fixed on the basin frame 12, a bottom end of the framework 110 penetrates through a center hole of the first vibrating diaphragm 13 and is connected with an inner edge of the elastic wave 14, the basin frame 12, the first vibrating diaphragm 13, and the elastic wave 14 jointly surround to form a cavity, and the dust cap 15 closes an opening at a bottom end of the framework 110.
It should be noted that the frame 12 is used for supporting other components of the speaker and connecting with the sound generating device, and the common material is SPCC or ABS/PC injection molding. The frame 12 is in the form of a cylinder having a front end with an inner diameter larger than that of a rear end, and is disposed radially outward of the vibration unit, and the first diaphragm 13, the ring damper 14, and the dust cap 15 are coaxially housed radially inward of the frame 12.
In the present embodiment, the frame 110 is located at the front end of the speaker 100, and the first diaphragm 13 receives the vibration transmitted from the frame 110, thereby radiating the vibration in the form of sound waves toward the rear end of the speaker.
Further, with reference to fig. 5, the first diaphragm 13 includes a conical ketone body 130 and a folding ring 131 connected to an edge of the ketone body 130, the first diaphragm 13 is supported and fixed on the frame 12 by the folding ring 131, the ketone body 130 has a first end portion and a second end portion which are oppositely disposed, an inner diameter of the first end portion is larger than an inner diameter of the second end portion, and the folding ring 131 is connected to the first end portion. The material of the folded ring 131 is TPU, rubber, paper, high molecular polymer, cloth, etc., and the material of the ketone body 130 is paper, high molecular polymer, aluminum magnesium, etc.
Further, the general material of the elastic wave 14 is cotton cloth, conex, a mixture of conex and cotton cloth, hemp, rayon, etc., and the thickness is 0.1mm to 0.5 mm.
In addition, the dust cap 15 is located at the rear end of the speaker 100, and the common material is paper, composite polymer material, aluminum alloy, aluminum magnesium alloy, etc., and the thickness is 0.05mm to 0.3 mm. Specifically, the voice coil 111 is covered and protected from the rear side of the speaker 100 by the dust cap 15.
In the present embodiment, with continued reference to fig. 5, the frame 110 is cylindrical and is disposed to face the rear surface of the dust cap 15. In addition, the frame 110, the first diaphragm 13, the damper 14, and the dust cap 15 are coaxially disposed. The voice coil 111 is a vibration source of the first diaphragm 13. Specifically, the voice coil 111 is wound around the outer peripheral surface of the bobbin 110, and vibrates in the axial direction integrally with the bobbin 110 by the interaction between the received audio electric signal and the magnetic flux in the magnetic circuit unit. Thereby, the vibration generated in the voice coil 111 is transmitted to the first diaphragm 13 via the bobbin 110.
It should be noted that the common material of the bobbin 110 is a paper tube, a PI tube, or an aluminum tube, and the common material of the voice coil 111 is a copper wire/aluminum wire.
With reference to fig. 5 and 7, the magnetic circuit unit includes a magnetic cover 16, a first pole piece 17, a first magnetic part 18, and a second magnetic part 19, wherein a first groove is formed on the magnetic cover 16, the first pole piece 17 is disposed on a bottom wall of the first groove, the voice coil 111 surrounds an outer side of the first pole piece 17, the first pole piece 17 is stacked on the first magnetic part 18, the first pole piece 17 is disposed between the first magnetic part 18 and the second magnetic part 19, and a side wall of the first groove, the first pole piece 17, and the first magnetic part 18 surround together to form the first magnetic gap 10. Specifically, the first magnetic member 18 and the second magnetic member 19 are both magnets, and are made of rare earth permanent magnets, commonly used materials are neodymium iron boron or alnico, and the like, and commonly used materials of the first pole piece 17 are SPCC, SPCD, SPCE, and the like.
Further, with reference to fig. 6, the magnetic cover 16 is usually made of SPCC, SPCD, SPCE, etc., the magnetic cover 16 includes three annular brackets 160, magnetic conductive sheets 161 and a plurality of connecting arms 162, the annular brackets 160 are supported and fixed on the basin stand 12, the magnetic conductive sheets 161 are located in the middle of the brackets 160, the first groove is formed in the magnetic conductive sheets 161, and the connecting arms 162 connect the brackets 160 and the magnetic conductive sheets 161.
It is worth mentioning that a second groove opposite to the first groove is formed in the magnetic conductive sheet 161, and the high-pitch sound generating unit is arranged in the second groove. Specifically, the high-pitch sound generating unit includes a third magnetic member 20, a second pole piece 21, a second diaphragm 22, and a second voice coil assembly 23, where the third magnetic member 20, the second pole piece 21, the second diaphragm 22, and the second voice coil assembly 23 are coaxially disposed, the third magnetic member 20 is disposed on the bottom wall of the second groove, the second pole piece 21 is stacked on the third magnetic member 20, a side wall of the second groove, the third magnetic member 20 and the second pole piece 21 jointly surround to form a second magnetic gap 24, the second diaphragm 22 covers a notch of the second groove, the second voice coil assembly 23 is connected to the second diaphragm 22, and at least a portion of the second voice coil assembly 23 is disposed in the second magnetic gap 24. Specifically, a punch is used to form a second groove in the magnetic conductive sheet 161 as an installation groove of the high-pitch sound unit. Therefore, on one hand, a special high-frequency sounding component is integrated on the magnetic cover 16, the effective frequency range of the loudspeaker 100 is expanded, on the other hand, the component processing cost is saved, the material utilization rate is improved, and the assembly process is simplified.
It should be noted that the third magnetic member 20 may be a magnet, made of a rare earth permanent magnet, made of neodymium iron boron or alnico, etc., the second pole piece 21 is made of SPCC, SPCD, SPCE, etc., and the second voice coil assembly 23 is composed of a frame and a voice coil, where the second voice coil assembly 23 is made of a paper tube + copper wire/aluminum wire, or copper wire/aluminum wire (without a paper tube). The second diaphragm 22 is made of common materials such as TPU, rubber, paper, high molecular polymer, and cloth.
In addition, with reference to fig. 5 and 7, the speaker 100 of the present application further includes an external terminal 24 disposed on the frame 12, the external terminal 24 is used to connect an external circuit with the first voice coil assembly 11 and the second voice coil assembly 23, and the common material of the external terminal 24 is a cardboard riveted metal terminal, a PCB, etc.
Referring to fig. 8, an embodiment of the present invention provides a sound generating apparatus 300 including a cavity 30 having an opening and the speaker 100 as described above, wherein the front end of the frame 12 is supported and fixed at the opening of the cavity 30.
In this embodiment, the sound generating device 300 may be a sound box, and the cavity 30 is made of PC + ABS plastic.
It is worth mentioning that a buffer sealing structure 31 is arranged between the front end part of the basin frame 12 and the cavity 30, specifically, the buffer sealing structure 31 may be a buffer sealing gasket, which is made of usually compressible PSR, EVA, TPU, rubber, etc., and has a thickness of 0.5mm to 5mm and a compression ratio of 0.3 to 2.0.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims (10)

1. A loudspeaker, the loudspeaker having a cavity, comprising:
a magnetic circuit unit having a first magnetic gap;
the vibration unit comprises a first voice coil assembly, the first voice coil assembly comprises a framework and a voice coil wound on the outer peripheral surface of the framework, the voice coil is arranged in the first magnetic gap, and the voice coil is located outside the cavity.
2. The loudspeaker of claim 1, wherein the vibration unit further comprises a frame, a first diaphragm, and an annular elastic wave, the magnetic circuit unit and the elastic wave are respectively disposed at two opposite ends of the frame, the first diaphragm is supported and fixed on the frame, a bottom end of the frame penetrates through a central hole of the first diaphragm and is connected with an inner edge of the elastic wave, and the frame, the first diaphragm, and the elastic wave together surround to form a cavity.
3. The speaker of claim 1, wherein the magnetic circuit unit comprises:
the magnetic cover is provided with a first groove;
the first pole piece is arranged on the bottom wall of the first groove, and the voice coil surrounds the outer side of the first pole piece;
the first magnetic piece is superposed on the first pole piece, and the side wall of the first groove, the first pole piece and the first magnetic piece jointly surround to form the first magnetic gap.
4. The speaker of claim 3, wherein the magnetic circuit unit further comprises:
the first pole piece is arranged between the first magnetic piece and the second magnetic piece.
5. A loudspeaker according to claim 3, wherein the magnetic shield comprises:
the annular bracket is supported and fixed on the basin frame;
the magnetic conductive sheet is positioned in the middle of the bracket, and the first groove is formed in the magnetic conductive sheet;
and the connecting arm is connected with the bracket and the magnetic conductive sheet.
6. The loudspeaker of claim 5, wherein the magnetic conductive sheet is provided with a second groove opposite to the first groove, and the loudspeaker further comprises a high-pitch sound unit arranged in the second groove.
7. The speaker of claim 6, wherein the treble generating unit comprises:
the third magnetic piece is arranged on the bottom wall of the second groove;
the second pole piece is superposed on the third magnetic piece, and the side wall of the second groove, the third magnetic piece and the second pole piece jointly surround to form the second magnetic gap;
the second vibrating diaphragm is covered on the notch of the second groove;
and the second voice coil assembly is connected with the second diaphragm, and at least part of the second voice coil assembly is arranged in the second magnetic gap.
8. The loudspeaker of claim 2, wherein the first diaphragm comprises: the cone-shaped ketone body and the folding ring are connected with the edge of the ketone body, the first vibrating diaphragm is supported and fixed on the basin frame through the folding ring, the ketone body is provided with a first end portion and a second end portion which are arranged oppositely, the inner diameter of the first end portion is larger than that of the second end portion, and the folding ring is connected with the first end portion.
9. The loudspeaker of any one of claims 1-8, wherein the vibration unit further comprises: and the dustproof cap is used for plugging the bottom end opening of the framework.
10. A sound generating device comprising a chamber having an opening and a loudspeaker according to any of claims 5 to 9, wherein the frame support is fixed at the opening of the chamber.
CN202210240473.3A 2022-03-10 2022-03-10 Loudspeaker and sound production equipment Pending CN114650489A (en)

Priority Applications (1)

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CN202210240473.3A CN114650489A (en) 2022-03-10 2022-03-10 Loudspeaker and sound production equipment

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Application Number Priority Date Filing Date Title
CN202210240473.3A CN114650489A (en) 2022-03-10 2022-03-10 Loudspeaker and sound production equipment

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CN114650489A true CN114650489A (en) 2022-06-21

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CN215898005U (en) * 2021-07-07 2022-02-22 惠州迪芬尼声学科技股份有限公司 Compact coaxial loudspeaker
CN215601490U (en) * 2021-09-17 2022-01-21 东莞市格雷特电子科技有限公司 Ultra-thin type high and low sound coaxial loudspeaker

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WO2024000707A1 (en) * 2022-06-29 2024-01-04 瑞声光电科技(常州)有限公司 Earphone core

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