CN110881161A - Speaker and electronic equipment - Google Patents
Speaker and electronic equipment Download PDFInfo
- Publication number
- CN110881161A CN110881161A CN201911365992.7A CN201911365992A CN110881161A CN 110881161 A CN110881161 A CN 110881161A CN 201911365992 A CN201911365992 A CN 201911365992A CN 110881161 A CN110881161 A CN 110881161A
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- yoke
- magnet
- voice coil
- vibrating diaphragm
- loudspeaker
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a loudspeaker, which comprises a vibrating diaphragm; further comprising: the first voice coil is arranged on the vibrating diaphragm; the first magnet is arranged on the first side of the vibrating diaphragm; the second magnet is arranged on the second side of the vibrating diaphragm; the first magnet and the second magnet are arranged at intervals with the first voice coil, and the first magnet and the second magnet attract each other to form a magnetic circuit direction parallel to the central axis of the vibrating diaphragm so as to drive the first voice coil to vibrate. An electronic device is also disclosed. The first magnet and the second magnet in the loudspeaker provided by the invention are mutually attracted, and a uniform magnetic field is generated near the first voice coil so as to further provide sufficient external force, so that the first voice coil stably vibrates in the uniform magnetic field parallel to the central axis of the vibrating diaphragm, the voice quality loss caused by the rubbing of the voice coil in a magnetic gap is avoided, the distortion is reduced, and the voice quality of the loudspeaker is improved. And a washer is not required to be arranged, so that more design space is further released.
Description
Technical Field
The invention belongs to the technical field of audio equipment, and particularly relates to a loudspeaker and electronic equipment with the loudspeaker.
Background
A conventional moving-coil speaker generally includes a diaphragm, a voice coil, and a magnet. The voice coil is connected to the inner ring portion of the diaphragm and is located in the magnetic gap. When a current signal passes through the voice coil, the voice coil generates a magnetic field, and the magnetic field interacts with the magnetic field of the permanent magnet to generate attraction or repulsion, so that the vibrating diaphragm is pushed to vibrate.
The magnetic circuit system of the traditional moving-coil loudspeaker is arranged in the back cavity of the loudspeaker, namely below the vibrating diaphragm. The direction of the magnetic field is parallel to the direction of the diaphragm. The voice coil is inserted into the magnetic gap, thereby obtaining a magnetic field driving force. However, with this conventional structure, the voice coil and the magnetic circuit easily rub against each other, which further causes poor sound quality. In particular, a speaker used in a mobile phone generally employs a rectangular voice coil. The manufacturing process of the rectangular voice coil has more defects, and the problem that the rectangular voice coil is easily rubbed and collided with a magnetic circuit is easily caused, which is a great factor for causing the loss of the tone quality of the mobile phone.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
The invention provides a novel loudspeaker aiming at the problem that a moving coil loudspeaker in the prior art is easy to rub and touch a rectangular voice coil and a magnetic circuit.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a loudspeaker includes a diaphragm; further comprising: the first voice coil is arranged on the vibrating diaphragm; the first magnet is arranged on the first side of the vibrating diaphragm; the second magnet is arranged on the second side of the vibrating diaphragm; the first magnet and the second magnet are arranged at intervals with the first voice coil, and the first magnet and the second magnet attract each other to form a magnetic circuit direction parallel to the central axis of the vibrating diaphragm so as to drive the first voice coil to vibrate.
In order to enhance the driving force, the voice coil further comprises a second voice coil; the first magnet and the first voice coil are arranged at intervals; the second voice coil is arranged on the second surface of the vibrating diaphragm and fixedly connected with the vibrating diaphragm, and the second magnet and the second voice coil are arranged at intervals; the first voice coil and the second voice coil are planar voice coils.
Further, the method also comprises the following steps: the first yoke iron, the first magnet, the first voice coil and the vibrating diaphragm jointly enclose a front cavity, and a front cavity sound hole is formed in the first yoke iron; and the second yoke iron is arranged on the second side of the vibrating diaphragm, the second yoke iron, the second magnet, the second voice coil and the vibrating diaphragm jointly enclose a rear cavity, and a rear cavity sound hole is formed in the second yoke iron.
Further, the method also comprises the following steps: the first basin frame is provided with a first yoke iron and a second yoke iron which are oppositely arranged and jointly accommodated in the first basin frame; the second basin frame is arranged on the outer side of the first basin frame; the first frame and the second frame jointly enclose an inverting channel and an inverting hole located on the upper surface of the second frame, and the inverting channel is communicated with the rear cavity sound hole.
Furthermore, the first magnet and the second magnet are annular, the aperture of the front cavity sound hole is the same as the inner diameter of the first magnet, and the aperture of the rear cavity sound hole is the same as the inner diameter of the second magnet.
Further, the first yoke is a cylinder with a hollow inner part, and the axis of the first yoke coincides with the central axis of the vibrating diaphragm; one end of the first yoke iron is provided with a first opening, the other end of the first yoke iron is parallel to the vibrating diaphragm and is provided with a front cavity sound hole, one end of the first yoke iron, which is provided with the first opening, is in contact with the surface of the vibrating diaphragm, and the first magnet is fixed on the inner surface of one end of the first yoke iron, which is provided with the front cavity sound hole; the height of the first yoke is greater than the sum of the heights of the first magnet and the first voice coil.
Furthermore, the second yoke is a cylinder with a hollow inner part, and the axis of the second yoke is superposed with the central axis of the vibrating diaphragm; one end of the second yoke iron is provided with a second opening, the other end of the second yoke iron is parallel to the vibrating diaphragm and is provided with a rear cavity sound hole, one end of the second yoke iron, which is provided with the second opening, is in contact with the surface of the vibrating diaphragm and is opposite to one end of the first yoke iron, which is provided with the first opening, and the second magnet is fixed on the inner surface of one end of the second yoke iron, which is provided with the rear cavity sound hole; the height of the second yoke is greater than the sum of the heights of the second magnet and the second voice coil.
Further, first basin frame is inside hollow cylinder and its both ends are formed with spacing boss respectively, and when first yoke and second yoke held in first basin frame, spacing boss respectively with form the spacing draw-in groove block on first yoke and second yoke surface.
Furthermore, a plurality of flanges are formed on the inner surface of the second basin frame and are uniformly distributed along the circumferential direction; an inverting channel and an inverting hole are formed between any two adjacent flanges; the plurality of inversion channels and the inversion holes are uniformly distributed along the axial direction.
Another aspect of the present invention provides an electronic device including a speaker including a diaphragm; further comprising: the first voice coil is arranged on the vibrating diaphragm; the first magnet is arranged on the first side of the vibrating diaphragm; the second magnet is arranged on the second side of the vibrating diaphragm; the first magnet and the second magnet are arranged at intervals with the first voice coil, and the first magnet and the second magnet attract each other to form a magnetic circuit direction parallel to the central axis of the vibrating diaphragm so as to drive the first voice coil to vibrate.
Compared with the prior art, the invention has the advantages and positive effects that: the first magnet and the second magnet in the loudspeaker provided by the invention are mutually attracted, and a uniform magnetic field is generated near the first voice coil so as to further provide sufficient external force, so that the first voice coil stably vibrates in the uniform magnetic field parallel to the central axis of the vibrating diaphragm, the voice quality loss caused by the rubbing of the voice coil in a magnetic gap is avoided, the distortion is reduced, and the voice quality of the loudspeaker is improved. And a washer is not required to be arranged, so that more design space is further released.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an internal structure of a speaker according to the present invention;
fig. 2 is an exploded view of a speaker according to the present invention;
fig. 3 is a schematic view of a magnetic circuit of the speaker shown in fig. 1;
fig. 4 is a schematic view of the sound radiation of the loudspeaker shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
A newly designed loudspeaker is shown in figures 1 and 2, and the design purpose of the internal structure of the newly designed loudspeaker is to solve the problem that the traditional moving coil loudspeaker is easy to rub and collide with a voice coil and a magnetic circuit, so that the tone quality is damaged. Referring to the internal structure shown in fig. 1 and 2 of the drawings, a diaphragm 11 is provided in the present speaker 1. The diaphragm 11 is made of a material with low density, good rigidity and moderate damping, and based on the radial vibration principle, in this embodiment, the diaphragm 11 is designed to be a circular sheet. The central axis of the diaphragm 11 coincides with the central axis of the entire loudspeaker 1. A first voice coil 12 is provided on the diaphragm 11. In order to reduce the overall height, the first voice coil 12 is preferably a planar voice coil, and may be adhered to the surface of the diaphragm 11 by means of an adhesive, or may be directly formed on the diaphragm 11 by means of printing or etching. The number of coils and the impedance ratio of the first voice coil 12 can be adjusted according to the requirements of specific products.
For convenience of description, the two sides of the diaphragm 11 are defined as a first side and a second side, i.e., an upper side and a lower side in the direction shown in fig. 1 and 2, respectively, with reference to the position of the diaphragm 11. In order to drive the voice coil to vibrate, a first magnet 14 and a second magnet 15 are also specifically designed in the loudspeaker 1, wherein the first magnet 14 is arranged on a first side of the diaphragm 11, and the second magnet 15 is arranged on a second side of the diaphragm 11, which are opposite to each other. As shown in fig. 3, the adjacent ends of the first magnet 14 and the second magnet 15 have different magnetism, and attract each other to form a magnetic path direction parallel to the central axis (shown by a dotted line in fig. 3) of the diaphragm 11, so as to further drive the first voice coil 12 to vibrate. Because first magnet 14 and second magnet 15 are located vibrating diaphragm 11 respectively to and the both sides of first voice coil 12, so, when first magnet 14 and second magnet 15 inter attraction, can produce the even magnetic field in order to further provide sufficient external force near first voice coil 12, make first voice coil 12 be even, steady vibration in the magnetic field parallel with vibrating diaphragm 11 axis, avoid the voice coil to rub in the magnetic gap and bump and lead to the tone quality loss, reduce the condition that the distortion appears, improve speaker 1 tone quality. Because the voice coil is directly driven by the magnet, the washer is not needed to be arranged in the loudspeaker 1, and more design space is further released.
Referring to the drawings, a diaphragm 11 has first and second opposite surfaces. Wherein the first voice coil 12 is fixedly arranged on the first surface and forms a certain gap with the first magnet 14. To enhance the driving force to the diaphragm 11, a second voice coil 13 is further preferably fixedly provided on the second surface of the diaphragm 11. A gap is formed between the second voice coil 13 and the second magnet 15. Similar to the first voice coil 12, the second voice coil 13 is also a planar voice coil, and may be adhered to the surface of the diaphragm 11 by means of adhesion, or may be directly formed on the diaphragm 11 by means of printing or etching. The number of coils and the impedance ratio of the second voice coil 13 can also be adjusted according to the requirements of specific products. First voice coil 12 and second voice coil 13 set up respectively in the both sides of vibrating diaphragm 11, and when the signal of telecommunication flowed through first voice coil 12 and second voice coil 13, the magnetic field that its produced and first magnet 14 and second magnet 15 produced and the parallel magnetic field interaction of axis, first voice coil 12 and second voice coil 13 drive vibrating diaphragm 11 vibration integratively, vibrate more evenly sensitively, and sound signal has better performance.
As shown in fig. 1 and 2, the first magnet 14 and the second magnet 15 are preferably designed as identical circular rings for the purpose of forming a uniform magnetic field. It will be understood by those skilled in the art that the first magnet 14 and the second magnet 15 may be designed as a closed ring shape such as a regular hexagon, a regular octagon, etc. to attract each other to form a magnetic path direction parallel to the central axis of the diaphragm 11.
The magnetic circuit design and the acoustic radiation design of the loudspeaker 1 are described in detail with reference to fig. 1 to 4. In addition to the magnet, the voice coil, and the diaphragm 11, a first yoke 16 and a second yoke 17 are provided in the speaker 1. A first yoke 16 is arranged on a first side of the diaphragm 11, corresponding to the circular ring design of the first magnet 14. The first yoke 16 is designed as a cylinder with a hollow interior and its axis coincides with the central axis of the diaphragm 11. The first yoke 16 has a first opening formed in an end surface at one end thereof, and has an end surface at the other end thereof parallel to the diaphragm 11. One end of the first yoke 16, which is formed with a first opening, is in contact with the surface of the diaphragm 11 to fix the position relative to the diaphragm 11 and forms a closed magnetic circuit together with the second yoke 17, as shown in fig. 3. The height of the first yoke 16 is larger than the sum of the heights of the first magnet 14 and the first voice coil 12 to provide a sufficient space while securing the magnetic field strength.
A second yoke 17 is arranged on the second side of the diaphragm 11, which second yoke 17, like the first yoke 16, is likewise designed as a cylinder with a hollow interior and its axis coincides with the central axis of the diaphragm 11. A second opening 25 is formed on one end face of the second yoke 17, one end of the second yoke 17, which is formed with the second opening 25, is in contact with the surface of the diaphragm 11 and is opposite to one end of the first yoke 16, which is formed with the first opening, and the first yoke 16 and the second yoke 17 jointly form a closed magnetic circuit and fix the relative position of the diaphragm 11. The other end face of the second yoke 17 is parallel to the diaphragm 11. Similarly, the height of the second yoke 17 is larger than the sum of the heights of the second magnet 15 and the second voice coil 13, and also sufficient space is provided to avoid friction between the voice coil and the magnetic circuit.
As shown in fig. 1 and 4, a front cavity (30 shown in fig. 4) of the loudspeaker 1 can be enclosed by the first yoke 16, the first magnet 14, the first voice coil 12 and the diaphragm 11, and a front cavity sound hole 18 is opened at one end of the first yoke 16 parallel to the diaphragm 11. A dust screen 20 is arranged at the front cavity sound hole 18. A first magnet 14 in the form of a ring is fixed to an inner end surface of the first yoke 16 at the end where the front cavity sound hole 18 is formed. The inner diameter of the first magnet 14 is the same as the aperture of the front chamber sound hole 18, forming the acoustic radiation path of the front chamber. A back cavity (31 shown in fig. 4) of the loudspeaker 1 is defined by the second yoke 17, the second magnet 15, the second voice coil 13 and the diaphragm 11, and a back cavity sound hole 19 is opened at one end of the second yoke 17 parallel to the diaphragm 11. And a dust screen 21 is arranged at the rear cavity sound hole 19. The second magnet 15 is fixed to the inner end surface of the second yoke 17 at the end where the back cavity sound hole 19 is formed. The inner diameter of the second magnet 15 is the same as the aperture of the back cavity sound hole 19, forming part of the back cavity sound radiation path. The acoustic radiation path of the back volume also includes an inversion channel 26 and an inversion aperture 27. Specifically, the first yoke 16 and the second yoke 17 which are oppositely arranged are jointly accommodated in the first frame 22, and the second frame 23 is arranged on the outer side of the first frame 22. The outer surface of the first frame 22 and the inner surface of the second frame 23 together define an inversion channel 26 and an inversion aperture 27 in the upper surface of the second frame 23, the inversion channel 26 communicating with the back chamber acoustic aperture 19 to form another part of the acoustic radiation path of the back chamber. As shown in fig. 2, a plurality of flanges uniformly distributed in the axial direction are preferably provided on the inner surface of the second frame 23. Thus, an inversion channel 26 and an inversion aperture 27 can be formed between any two adjacent flanges around the first frame 22. The plurality of inverter channels 26 and the inverter holes 27 are uniformly distributed in the axial direction, and the overall sound effect is better.
In addition to forming the inverter channel 26 and the inverter hole 27, the first frame 22 also functions to fix the first yoke 16 and the second yoke 17. Referring to fig. 1 and 2, the first frame 22 is designed as a cylinder with a hollow interior, and both ends thereof are respectively formed with a circular opening, and the inner edge of the circular opening is extended inward to form a limit boss 28. Correspondingly, a limit catch groove 29 is formed on the outer surface of the first yoke 16 parallel to one end of the diaphragm 11, and similarly, a limit catch groove 29 is formed on the outer surface of the second yoke 17 parallel to one end of the diaphragm 11. When the first yoke 16 and the second yoke 17 are received in the first basket 22. The limiting bosses 28 are respectively clamped with limiting clamping grooves 29 formed on the outer surfaces of the first yoke 16 and the second yoke 17, the first basin frame 22 limits the first yoke 16 and the second yoke 17 to move in the axial direction, and stable connection of the first yoke 16 and the second yoke 17 is ensured.
Another aspect of the invention provides an electronic device. A speaker is provided in the electronic device. For a specific structure of the speaker, please refer to the detailed description of the above embodiments and the description of the drawings in the specification, which are not repeated herein. The electronic equipment provided with the loudspeaker can achieve the same technical effect. Those skilled in the art will appreciate without meaningfully that electronic devices include, but are not limited to, computers, cell phones, tablets, handheld electronic devices, wearable devices, audio playback devices, and gaming devices.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A loudspeaker includes a diaphragm; it is characterized by also comprising:
the first voice coil is arranged on the vibrating diaphragm;
the first magnet is arranged on the first side of the vibrating diaphragm; and
a second magnet disposed on a second side of the diaphragm;
the first magnet and the second magnet are arranged at intervals with the first voice coil, and the first magnet and the second magnet are mutually attracted to form a magnetic circuit direction parallel to the central axis of the vibrating diaphragm so as to drive the first voice coil to vibrate.
2. The loudspeaker of claim 1,
the voice coil is connected with the first voice coil;
the first voice coil is arranged on the first surface of the vibrating diaphragm and fixedly connected with the vibrating diaphragm, and the first magnet and the first voice coil are arranged at intervals; the second voice coil is arranged on the second surface of the vibrating diaphragm and fixedly connected with the vibrating diaphragm, and the second magnet and the second voice coil are arranged at intervals; the first voice coil and the second voice coil are planar voice coils.
3. The loudspeaker of claim 2, further comprising:
the first yoke is arranged on the first side of the vibrating diaphragm, a front cavity is enclosed by the first yoke, the first magnet, the first voice coil and the vibrating diaphragm, and a front cavity sound hole is formed in the first yoke; and
the second yoke iron is arranged on the second side of the vibrating diaphragm, a rear cavity is enclosed by the second yoke iron, the second magnet, the second voice coil and the vibrating diaphragm, and a rear cavity sound hole is formed in the second yoke iron.
4. The loudspeaker of claim 3, further comprising:
the first basin frame is provided with a first yoke and a second yoke which are oppositely arranged and are jointly accommodated in the first basin frame; and
the second basin frame is arranged on the outer side of the first basin frame;
the first basin frame and the second basin frame jointly enclose an inverting channel and an inverting hole located on the upper surface of the second basin frame, and the inverting channel is communicated with the rear cavity sound hole.
5. The loudspeaker of claim 4,
the first magnet and the second magnet are annular, the aperture of the front cavity sound hole is the same as the inner diameter of the first magnet, and the aperture of the rear cavity sound hole is the same as the inner diameter of the second magnet.
6. The loudspeaker of claim 5,
the first yoke iron is a cylinder with a hollow inner part, and the axis of the first yoke iron is superposed with the central axis of the vibrating diaphragm; a first opening is formed at one end of the first yoke, the other end of the first yoke is parallel to the vibrating diaphragm and is provided with the front cavity sound hole, one end of the first yoke, which is provided with the first opening, is in contact with the surface of the vibrating diaphragm, and the first magnet is fixed on the inner surface of one end of the first yoke, which is provided with the front cavity sound hole; the height of the first yoke is greater than the sum of the heights of the first magnet and the first voice coil.
7. The loudspeaker of claim 6,
the second yoke iron is a cylinder with a hollow inner part, and the axis of the second yoke iron is superposed with the central axis of the vibrating diaphragm; a second opening is formed at one end of the second yoke, the other end of the second yoke is parallel to the vibrating diaphragm and is provided with a rear cavity sound hole, one end of the second yoke, which is provided with the second opening, is in contact with the surface of the vibrating diaphragm and is opposite to one end of the first yoke, which is provided with the first opening, and the second magnet is fixed on the inner surface of one end of the second yoke, which is provided with the rear cavity sound hole; the height of the second yoke is greater than the sum of the heights of the second magnet and the second voice coil.
8. The loudspeaker of claim 7,
first basin frame is inside hollow cylinder and its both ends are formed with spacing boss respectively, works as first yoke and second yoke hold when in first basin frame, spacing boss respectively with form in spacing draw-in groove block on first yoke and the second yoke surface.
9. The loudspeaker of claim 8,
a plurality of flanges are formed on the inner surface of the second basin frame and are uniformly distributed along the circumferential direction; an inverting channel and an inverting hole are formed between any two adjacent flanges; the plurality of inversion channels and the inversion holes are uniformly distributed along the axial direction.
10. An electronic device, characterized in that it comprises a loudspeaker according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911365992.7A CN110881161A (en) | 2019-12-26 | 2019-12-26 | Speaker and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911365992.7A CN110881161A (en) | 2019-12-26 | 2019-12-26 | Speaker and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110881161A true CN110881161A (en) | 2020-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911365992.7A Pending CN110881161A (en) | 2019-12-26 | 2019-12-26 | Speaker and electronic equipment |
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| Country | Link |
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| CN (1) | CN110881161A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114040278A (en) * | 2021-11-17 | 2022-02-11 | 瑞声光电科技(常州)有限公司 | Loudspeaker box |
| CN114257933A (en) * | 2021-02-07 | 2022-03-29 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| WO2022068009A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound production device |
-
2019
- 2019-12-26 CN CN201911365992.7A patent/CN110881161A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022068009A1 (en) * | 2020-09-30 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN114257933A (en) * | 2021-02-07 | 2022-03-29 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114257932A (en) * | 2021-02-07 | 2022-03-29 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114286266A (en) * | 2021-02-07 | 2022-04-05 | 歌尔股份有限公司 | Speaker and electronic apparatus |
| CN114257933B (en) * | 2021-02-07 | 2023-08-29 | 歌尔股份有限公司 | Speaker and electronic device |
| CN114286266B (en) * | 2021-02-07 | 2023-08-29 | 歌尔股份有限公司 | Speaker and electronic device |
| CN114257932B (en) * | 2021-02-07 | 2024-05-31 | 歌尔股份有限公司 | Speaker and electronic device |
| CN114040278A (en) * | 2021-11-17 | 2022-02-11 | 瑞声光电科技(常州)有限公司 | Loudspeaker box |
| CN114040278B (en) * | 2021-11-17 | 2024-02-23 | 瑞声光电科技(常州)有限公司 | Loudspeaker box |
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