CN116055962A - Sound producing device and electronic equipment - Google Patents

Sound producing device and electronic equipment Download PDF

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Publication number
CN116055962A
CN116055962A CN202211725942.7A CN202211725942A CN116055962A CN 116055962 A CN116055962 A CN 116055962A CN 202211725942 A CN202211725942 A CN 202211725942A CN 116055962 A CN116055962 A CN 116055962A
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CN
China
Prior art keywords
shell
magnet
coil
conduction plate
magnetic conduction
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
CN202211725942.7A
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Chinese (zh)
Inventor
毛东升
郑国敬
张雨晴
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Goertek Inc
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Goertek Inc
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Publication date
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Priority to CN202211725942.7A priority Critical patent/CN116055962A/en
Publication of CN116055962A publication Critical patent/CN116055962A/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
    • H04R9/06—Loudspeakers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The invention provides a sound generating device and electronic equipment, wherein the sound generating device comprises a shell, a vibrator assembly and a stator assembly, wherein the vibrator assembly and the stator assembly are accommodated in the shell, and the vibrator assembly comprises a vibrating diaphragm fixed with the shell and an upper magnet connected with the vibrating diaphragm; the stator assembly comprises a coil fixed on the shell, a middle magnetic conduction plate and a lower magnet, wherein the middle magnetic conduction plate and the lower magnet are arranged inside the coil, the middle magnetic conduction plate and the lower magnet are stacked along the vibration direction, the middle magnetic conduction plate is positioned on one side, close to the vibrator assembly, of the lower magnet, and in the vibration process, the upper magnet stretches into the coil. The invention solves the problems of single driving mode, complex structure and the like of the existing sounding device.

Description

Sound producing device and electronic equipment
Technical Field
The present invention relates to the field of electroacoustic conversion technology, and more particularly, to a sound generating device and an electronic apparatus.
Background
The electromagnetic buzzer is a common electronic sounder, and is used as a sounding device for electronic products and widely applied to various electrical equipment through the action of an electromagnetic coil on a buzzer to sound. The traditional buzzer vibration principle is that an inner iron core of a coil is magnetized, an armature on a vibration diaphragm is attracted to generate vibration, the driving form is single, and the structure is complex.
Disclosure of Invention
In view of the above problems, the present invention is directed to a sound generating device and an electronic apparatus, so as to solve the problems of single driving mode and complex structure of the existing sound generating device.
The invention provides a sound generating device, which comprises a shell, a vibrator assembly and a stator assembly, wherein the vibrator assembly and the stator assembly are accommodated in the shell,
the vibrator assembly comprises a vibrating diaphragm fixed with the shell and an upper magnet connected with the vibrating diaphragm;
the stator assembly comprises a coil fixed on the shell, a middle magnetic conduction plate and a lower magnet, wherein the middle magnetic conduction plate and the lower magnet are arranged inside the coil, the middle magnetic conduction plate and the lower magnet are stacked along the vibration direction, the middle magnetic conduction plate is positioned on one side, close to the vibrator assembly, of the lower magnet, and in the vibration process, the upper magnet stretches into the coil.
In addition, preferably, the vibrator assembly further includes a yoke connected to the diaphragm, the upper magnet is disposed at an inner side of the yoke, a magnetic gap is formed between the upper magnet and a sidewall of the yoke, and an upper portion of the coil is inserted into the magnetic gap.
In addition, preferably, the stator assembly further comprises an annular magnetic conduction plate, and the annular magnetic conduction plate is sleeved on the coil.
Furthermore, it is preferred that the housing is an injection molded housing comprising an upper housing and a lower housing, wherein,
the vibrating diaphragm is fixed at the position where the upper shell is connected with the lower shell, and the coil is fixed on the lower shell.
In addition, the electric conduction terminal is preferably further arranged, and the electric conduction terminal and the lower shell are of an injection molding integrated structure.
Furthermore, it is preferable that the conductive terminal is connected to a lead wire of the coil.
In addition, preferably, a sound outlet hole which communicates with the outside is provided on the upper case, and the sound outlet hole corresponds to the vibration diaphragm.
In addition, preferably, the lower magnet and the upper magnet are magnetized in a vibration direction, and the magnetization directions are opposite.
Furthermore, it is preferable that the vibration diaphragm is a metal diaphragm.
The invention also provides electronic equipment comprising the sounding device.
According to the sounding device and the electronic equipment provided by the invention, through the separated opposite magnetic structure design of the vibrator assembly and the stator assembly, the upper magnet vibrates along with the vibrator assembly, the lower magnet and the middle magnetic conduction plate are fixed at the bottom of the coil, attractive force and repulsive force provided by the upper magnet and the lower magnet act, and meanwhile, the lower magnet plays a role in providing balance force; the structure is simple, and the stability and the reliability of the product are improved by adopting the coaxial layout.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and readily appreciated by reference to the following description and claims in conjunction with the accompanying drawings and a more complete understanding of the invention. In the drawings:
FIG. 1 is an exploded view of a sound emitting device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;
fig. 3, fig. 4 and fig. 5 are schematic diagrams illustrating an operation principle of a sound generating device according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a sound generating apparatus according to a second embodiment of the present invention.
The vibration magnetic resonance device comprises a vibration diaphragm, an upper shell, a vibration diaphragm, a coil, a middle magnetic conduction plate, a lower magnetic conduction plate, a conductive terminal, a lower shell, a sound hole, a ring-shaped magnetic conduction plate and a sound hole, wherein the vibration diaphragm is arranged on the vibration diaphragm, the upper shell is arranged on the vibration diaphragm, the vibration diaphragm is arranged on the vibration magnetic conduction plate, the vibration diaphragm is arranged on the vibration diaphragm, and the vibration magnetic conduction plate is arranged on the vibration diaphragm.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The invention provides a sound generating device, which solves the problems of single driving mode, complex structure and the like of the prior sound generating device.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to illustrate the structure of the sound generating device provided by the invention, the invention provides the sound generating device which comprises a shell, and a vibrator assembly and a stator assembly which are accommodated in the shell, wherein the vibrator assembly comprises a vibrating diaphragm fixed with the shell and an upper magnet connected with the vibrating diaphragm; the stator assembly comprises a coil fixed on the shell, a middle magnetic conduction plate and a lower magnet, wherein the middle magnetic conduction plate and the lower magnet are arranged inside the coil, the middle magnetic conduction plate and the lower magnet are stacked along the vibration direction, the middle magnetic conduction plate is positioned on one side, close to the vibrator assembly, of the lower magnet, and in the vibration process, the upper magnet stretches into the coil.
Example 1
For the purpose of illustrating the structure of the sound emitting device provided by the present invention, fig. 1 to 5 exemplarily show the structure of the sound emitting device from different angles, and in particular, fig. 1 shows an exploded structure of the sound emitting device according to an embodiment of the present invention; FIG. 2 illustrates a cross-sectional configuration of a sound emitting device according to an embodiment of the present invention; fig. 3, 4 and 5 show the operation principle of the sound emitting device according to the embodiment of the present invention, respectively.
As shown in fig. 1 to 5, the present invention provides a sound generating device, which includes a housing, a vibrator assembly and a stator assembly, wherein the vibrator assembly is accommodated in the housing, the vibrator assembly includes a vibrating diaphragm 2 fixed with the housing, an upper magnet 4 connected with the vibrating diaphragm 1, and a yoke 3, the upper magnet 4 is disposed inside the yoke 3, and a magnetic gap is formed between the upper magnet 4 and a side wall of the yoke 3; the stator assembly comprises a coil 5 fixed on the housing, a middle magnetic conduction plate 6 and a lower magnet 7, wherein the middle magnetic conduction plate 6 and the lower magnet 7 are arranged inside the coil 5 in a stacked mode along the vibration direction, the middle magnetic conduction plate 6 is located at the upper portion of the lower magnet 7, and the upper portion of the coil 5 is inserted into the magnetic gap.
The shell is an injection-molded shell and comprises an upper shell 1 and a lower shell 9, the vibrating diaphragm 2 is fixed at the position where the upper shell 1 is connected with the lower shell 9, and the coil 5 is fixed on the lower shell 9. The invention provides a sound generating device which also comprises a conductive terminal 8, wherein the conductive terminal 8 and the lower shell 9 are of an injection molding integrated structure; the conductive terminals 9 are connected to the leads of the coil 5. An acoustic hole 10 communicating with the outside is provided in the upper case 1, and the acoustic hole 10 communicates with the diaphragm 2.
The embodiment shown in fig. 3 shows a magnetic circuit of the sound generating device, the upper magnet 4 is disposed on the inner side of the magnetic yoke 3, a magnetic gap is formed between the upper magnet 4 and the side wall of the magnetic yoke 3, and the lower end surface of the upper magnet 4 goes deep into the coil 5, namely: the upper part of the coil 5 is arranged in the magnetic gap, the lower magnet 7 and the upper magnet 4 are oppositely magnetized along the vibration direction, the magnetic yoke 3 is made of magnetic materials, and magnetic force lines are guided to form a closed magnetic force loop.
In the embodiment shown in fig. 4, the vibrator assembly moves downward under the driving force of the upper magnet and the attraction force of the central magnetically permeable plate. After being electrified, the vibrator assembly vibrates downwards under the action of electromagnetic force, and meanwhile, the central magnetic conduction plate inside the coil is magnetized to attract the vibrator assembly to move downwards. In the process, the vibrator assembly is driven through the interaction force of the Lorentz force and the magnet.
In the embodiment shown in fig. 5, after power failure, the vibrator assembly is reset under the action of the vibrating diaphragm, and the lower magnet provides repulsive force, so that the vibrator assembly is reset quickly.
In the embodiment of the invention, when the vibrator assembly moves upwards from the balance state, the vibrator assembly performs reset movement under the repulsive force of the lower magnet and the elastic force of the metal diaphragm.
In the embodiment of the invention, the sounding device adopts a separated pair-magnetic structure design, the upper magnet vibrates along with the vibrator assembly, the lower magnet and the middle magnetic conduction plate are fixed at the bottom of the coil, the attraction and the repulsive force provided by the upper magnet and the lower magnet act, and meanwhile, the lower magnet plays a role in providing balance force; the structure is simple, and the stability and the reliability of the product are improved by adopting the coaxial layout.
Example two
In the embodiment of the invention, in order to reduce the mass of the vibrator assembly and improve the magnetic field efficiency, the structure of the sound generating device of the embodiment is improved. As shown in fig. 6, the present invention further provides a sound generating apparatus, which includes a housing, a vibrator assembly and a stator assembly, wherein the vibrator assembly is accommodated in the housing, and includes a vibrating diaphragm 2 fixed to the housing, and an upper magnet 4 connected to the vibrating diaphragm 2; the stator assembly comprises a coil 5 fixed on the shell, an annular magnetic conduction plate sleeved on the coil 5, a middle magnetic conduction plate 6 and a lower magnet 7, wherein the middle magnetic conduction plate 6 and the lower magnet 7 are arranged inside the coil 5, the middle magnetic conduction plate 6 and the lower magnet 7 are stacked along the vibration direction, and the coil 5 is embedded inside the annular magnetic conduction plate 11.
In the embodiment of the invention, the vibrator assembly moves downwards under the action of the driving force generated by the interaction of the upper magnet 4 and the annular magnetic conductive plate 11 and the attraction force of the central magnetic conductive plate 6. The vibrator assembly performs reset movement under the action of repulsive force generated by interaction of the lower magnet 4 and the annular magnetic conduction plate 11 and elastic force of the vibrating diaphragm.
The shell is an injection-molded shell and comprises an upper shell 1 and a lower shell 9, the vibrating diaphragm 2 is fixed at the position where the upper shell 1 is connected with the lower shell 9, and the coil 5 is fixed on the lower shell 9. The invention provides a sound generating device which also comprises a conductive terminal 8, wherein the conductive terminal 8 and the lower shell 9 are of an injection molding integrated structure; the conductive terminals 9 are connected to the leads of the coil 5. An acoustic hole 10 communicating with the outside is provided in the upper case 1, and the acoustic hole 10 communicates with the diaphragm 2.
Compared with the first embodiment, the second embodiment of the invention has the advantages that the quality of the vibrator assembly can be reduced because the magnetic yoke is not arranged, and the magnetic field efficiency and the magnetic force are improved because the annular magnetic guide plate is added at the periphery of the coil; the magnetic force is enhanced, so that the amplitude of the product is improved, and the sounding effect is enhanced.
According to the technical scheme, the sounding device provided by the invention has the advantages that through the design of the split type opposite magnetic structure of the vibrator assembly and the stator assembly, the upper magnet vibrates along with the vibrator assembly, the lower magnet and the middle magnetic conduction plate are fixed at the bottom of the coil, attractive force and repulsive force provided by the upper magnet and the lower magnet act, and meanwhile, the lower magnet plays a role in providing balance force; the structure is simple, and the stability and the reliability of the product are improved by adopting the coaxial layout.
The invention also provides an electronic device, which comprises the sounding device, and the specific structure of the sounding device refers to the foregoing embodiments, and because the electronic device adopts all the technical schemes of all the foregoing embodiments, the electronic device at least has all the beneficial effects brought by the technical schemes of the foregoing embodiments, and will not be described in detail herein.
The sound emitting device and the electronic apparatus according to the present invention are described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the sound generating apparatus and electronic device as set forth in the above-described invention without departing from the spirit of the invention. Accordingly, the scope of the invention should be determined from the following claims.

Claims (10)

1. A sound generating device is characterized by comprising a shell, a vibrator assembly and a stator assembly which are accommodated in the shell, wherein,
the vibrator assembly comprises a vibrating diaphragm fixed with the shell and an upper magnet connected with the vibrating diaphragm;
the stator assembly comprises a coil fixed on the shell, a middle magnetic conduction plate and a lower magnet, wherein the middle magnetic conduction plate and the lower magnet are arranged inside the coil, the middle magnetic conduction plate and the lower magnet are stacked along the vibration direction, the middle magnetic conduction plate is positioned on one side, close to the vibrator assembly, of the lower magnet, and in the vibration process, the upper magnet stretches into the coil.
2. The sound generating apparatus of claim 1, wherein,
the vibrator assembly further comprises a magnet yoke connected with the vibrating diaphragm, the upper magnet is arranged on the inner side of the magnet yoke, a magnetic gap is formed between the upper magnet and the side wall of the magnet yoke, and the upper portion of the coil is inserted into the magnetic gap.
3. The sound generating apparatus of claim 1, wherein,
the stator assembly further comprises an annular magnetic conduction plate, and the annular magnetic conduction plate is sleeved on the coil.
4. The sound generating apparatus of claim 1, wherein,
the shell is an injection molding shell and comprises an upper shell and a lower shell, wherein,
the vibrating diaphragm is fixed at the position where the upper shell is connected with the lower shell, and the coil is fixed on the lower shell.
5. The sound emitting apparatus of claim 4,
the electric conduction device also comprises an electric conduction terminal, wherein the electric conduction terminal and the lower shell are of an injection molding integrated structure.
6. The sound emitting apparatus of claim 5, wherein,
the conductive terminal is connected with a lead wire of the coil.
7. The sound emitting apparatus of claim 4,
and the upper shell is provided with a sound outlet communicated with the outside, and the sound outlet corresponds to the vibrating diaphragm.
8. The sound generating apparatus of claim 1, wherein,
the lower magnet and the upper magnet magnetize along the vibration direction, and the magnetizing directions are opposite.
9. The sound generating apparatus of claim 1, wherein,
the vibrating diaphragm adopts a metal diaphragm.
10. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 9.
CN202211725942.7A 2022-12-30 2022-12-30 Sound producing device and electronic equipment Pending CN116055962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211725942.7A CN116055962A (en) 2022-12-30 2022-12-30 Sound producing device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211725942.7A CN116055962A (en) 2022-12-30 2022-12-30 Sound producing device and electronic equipment

Publications (1)

Publication Number Publication Date
CN116055962A true CN116055962A (en) 2023-05-02

Family

ID=86123103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211725942.7A Pending CN116055962A (en) 2022-12-30 2022-12-30 Sound producing device and electronic equipment

Country Status (1)

Country Link
CN (1) CN116055962A (en)

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