CN112954555B - Loudspeaker and electronic equipment - Google Patents
Loudspeaker and electronic equipment Download PDFInfo
- Publication number
- CN112954555B CN112954555B CN202110437691.1A CN202110437691A CN112954555B CN 112954555 B CN112954555 B CN 112954555B CN 202110437691 A CN202110437691 A CN 202110437691A CN 112954555 B CN112954555 B CN 112954555B
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- Prior art keywords
- basin
- fixed
- voice coil
- cone
- magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—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
- H04R9/025—Magnetic circuit
-
- 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
- H04R9/041—Centering
Abstract
The application discloses speaker and electronic equipment, wherein, the speaker includes: a basin stand; the magnetic circuit system is arranged in the basin stand; the cone basin is positioned in the basin frame, the outer edge of the cone basin is elastically fixed on the basin frame, the basin bottom of the cone basin is provided with a middle hole, and the basin bottom is close to the magnetic circuit system; a voice coil passing through and fixed to the central hole; and the centering support component is positioned on one side of the cone basin, which is far away from the magnetic circuit system, the outer edge of the centering support component is fixed with the basin frame, and the inner edge of the centering support component is elastically fixed with the part of the voice coil, which extends out of the middle hole. Compare in current speaker, this application does not set up the bullet ripples between awl basin and magnetic circuit to the height dimension between awl basin and the magnetic circuit has been saved, but utilizes one side sunk space of keeping away from magnetic circuit of awl basin, and the centering bracket component that will have the elastic support effect sets up in one side of keeping away from magnetic circuit of awl basin, does not occupy the extra height space of speaker, when satisfying the required amplitude space of voice coil loudspeaker voice coil vibration, has reduced the height dimension of speaker.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a speaker and an electronic device.
Background
The speaker is widely used in the field of electronic devices, and the speaker is becoming thinner and thinner in order to develop a trend, and the conventional speaker with a cone-shaped structure occupies a certain space in height, so that how to reduce the size of the speaker in height without reducing the performance of the speaker becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a speaker to reduce its height while ensuring its performance.
In order to achieve the purpose, the invention provides the following technical scheme:
a loudspeaker, comprising:
a basin stand;
the magnetic circuit system is arranged in the basin stand;
the cone basin is positioned in the basin frame, the outer edge of the cone basin is elastically fixed on the basin frame, a middle hole is formed in the basin bottom of the cone basin, and the basin bottom of the cone basin is close to the magnetic circuit system;
a voice coil passing through and fixed to the central hole;
the centering support assembly is positioned on one side of the cone basin, which is far away from the magnetic circuit system, the outer edge of the centering support assembly is fixed with the basin frame, and the inner edge of the centering support assembly is elastically fixed with the part of the voice coil, which extends out of the middle hole.
Preferably, in the speaker as described above, the centering bracket assembly includes:
the outer edge of the rigid support is fixed on the basin frame;
the outer ring of the elastic support piece is fixed with the rigid support, the elastic support piece is fixed with the position, extending out of the middle hole, of the voice coil, and the elastic support piece is located in the concave space of the cone basin.
Preferably, in the above speaker, the rigid support includes:
the outer ring of the elastic support piece is fixed with the fixed ring;
the landing leg, the one end of landing leg is fixed in the retainer plate, the other end of landing leg is fixed in the basin frame.
Preferably, in the above speaker, the leg has an arch structure for avoiding a physical space required for the cone to vibrate.
Preferably, in the above speaker, the elastic support piece includes an elastic ring, the elastic ring has one or more bending waves along a radial direction thereof, and an inner ring of the elastic ring is fixed to a portion of the voice coil extending out of the central hole.
Preferably, in the above speaker, the elastic support piece further includes a dust-proof piece, and the dust-proof piece is connected to the inner ring of the elastic ring in a sealing manner.
Preferably, in the above speaker, the material of the elastic support is elastic rubber, foam or TPU.
Preferably, in the above speaker, the outer edge of the cone and the frame are elastically connected by an elastic ring, and the elastic ring has a bending wave shape along a radial direction thereof.
Preferably, in the above speaker, the magnetic circuit system includes:
the U iron is fixed at the bottom of the basin frame;
the magnet is fixed in the U-shaped groove of the U-shaped iron;
the washer is located in the U-shaped groove and fixed at one end, close to the cone, of the magnet, an annular magnetic gap is formed between the washer and the outer ring of the magnet and the inner ring of the U-shaped iron, and the voice coil is suspended in the magnetic gap.
The application also provides an electronic device comprising a speaker, the speaker being as any one of the above.
Compared with the prior art, the invention has the beneficial effects that:
the loudspeaker comprises a basin frame, a magnetic circuit system, a cone basin, a voice coil and a centering support assembly, wherein the magnetic circuit system is arranged in the basin frame; the cone basin is positioned in the basin frame, the outer edge of the cone basin is elastically fixed on the basin frame, a middle hole is formed in the basin bottom of the cone basin, and the basin bottom of the cone basin is close to the magnetic circuit system; the voice coil penetrates through and is fixed in the middle hole; the centering support component is located one side of the cone basin far away from the magnetic circuit system, the outer edge of the centering support component is fixed with the basin frame, and the inner edge of the centering support component is elastically fixed with the position of the voice coil, extending out of the middle hole.
When the voice coil cone is in work, magnetic field force generated by the magnetic circuit system provides force factors for vibration of the voice coil, the voice coil is suspended in a magnetic gap of the magnetic circuit system and keeps concentricity with the magnetic gap, the voice coil is fixed with a middle hole of the cone and is fixed with the cone into a whole, and the outer edge of the cone is elastically fixed with the cone frame to provide compliance and restoring force for vibration of the voice coil. The centering support component is connected with the basin frame and the voice coil, and the inner edge of the centering support component is elastically fixed with the voice coil, so that compliance and restoring force are provided for vibration of the voice coil, and the concentric position of the voice coil in the magnetic gap is kept.
Compare in the position between awl basin and magnetic circuit among the prior art and set up the bullet ripples, connect voice coil loudspeaker voice coil and basin frame through playing the ripples and compare, this application does not set up the bullet ripples between awl basin and magnetic circuit, thereby the height dimension between awl basin and the magnetic circuit has been saved, but utilize one side sunk space of keeping away from magnetic circuit of awl basin, the centering bracket component that will have the elastic support effect sets up in the one side of keeping away from magnetic circuit of awl basin, can not occupy the extra high space of speaker, under the condition that satisfies the required amplitude space of voice coil loudspeaker voice coil vibration and compliance, can reduce the height dimension of speaker.
The electronic equipment provided by the application adopts the loudspeaker in the application, so that the size is reduced.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a speaker according to an embodiment of the present invention;
fig. 3 is an exploded schematic view of a speaker according to an embodiment of the present invention.
Wherein, 1 is a basin frame, 2 is an elastic ring, 3 is a cone, 4 is a centering bracket component, 41 is a rigid bracket, 411 is a fixed ring, 412 is a supporting leg, 42 is an elastic supporting sheet, 5 is a voice coil, 6 is a magnetic circuit system, 61 is U-shaped iron, 62 is a magnet, and 63 is a washer.
Detailed Description
The core of the invention is to provide a loudspeaker, which can ensure the performance and reduce the height size of the loudspeaker.
The invention also provides an electronic device comprising the loudspeaker, and the volume is reduced.
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.
Referring to fig. 1-3, an embodiment of the present invention provides a speaker, which includes a frame 1, a magnetic circuit system 6, a cone 3, a voice coil 5, and a centering bracket assembly 4, wherein the magnetic circuit system 6 is disposed in the frame 1; the cone basin 3 is positioned in the basin frame 1, the outer edge of the cone basin 3 is elastically fixed on the basin frame 1, a middle hole is formed in the basin bottom of the cone basin 3, and the basin bottom of the cone basin 3 is close to the magnetic circuit system 6; the voice coil 5 passes through and is fixed in the central hole; centering bracket component 4 is located one side of keeping away from magnetic circuit 6 of awl basin 3, and centering bracket component 4's outward flange is fixed with basin frame 1, and centering bracket component 4's inward flange and voice coil loudspeaker voice coil 5 stretch out mesoporous position elastic fixation, and the inward flange through centering bracket component 4 is fixed with voice coil loudspeaker voice coil 5's the mesoporous position that stretches out elastically, can satisfy voice coil loudspeaker voice coil 5 along axial vibration restoring force, provides the compliance for voice coil loudspeaker voice coil 5 vibration.
During operation, magnetic field force that magnetic circuit 6 produced provides the power factor for the vibration of voice coil loudspeaker voice coil 5, and voice coil loudspeaker voice coil 5 suspends in magnetic gap of magnetic circuit 6, and keeps the concentricity with the magnetic gap, and voice coil loudspeaker voice coil 5 is fixed with the mesopore of cone 3, and is fixed as an organic whole with cone 3, and the outward flange of cone 3 and basin frame 1 elastic fixation provide the compliance for the vibration of voice coil loudspeaker voice coil 5. The centering bracket assembly 4 connects the frame 1 and the voice coil 5, and the inner edge of the centering bracket assembly 4 is elastically fixed with the voice coil 5, so as to provide compliance and restoring force for the vibration of the voice coil 5 and maintain the concentric position of the voice coil 5 in the magnetic gap.
Compare the speaker in prior art and set up the bullet ripples between awl basin and magnetic circuit in the position, connect voice coil loudspeaker voice coil and basin frame through bullet ripples and compare, this application does not set up the bullet ripples between awl basin 3 and magnetic circuit 6, thereby the height dimension between awl basin 3 and magnetic circuit 6 has been saved, but utilize one side sunk space of keeping away from magnetic circuit 6 of awl basin 3, centering bracket component 4 that will have the elastic support effect sets up in one side of keeping away from magnetic circuit 6 of awl basin 3, can not occupy the extra height space of speaker, when satisfying the required amplitude space of voice coil loudspeaker voice coil 5 vibration and restoring force, can reduce the height dimension of speaker.
Further, the present embodiment provides a specific centering bracket assembly 4, which includes a rigid bracket 41 and an elastic support 42; the outer edge of the rigid support 41 is fixed on the basin frame 1, specifically, the rigid support 41 is fixed on the large end of the basin frame 1, the rigid support 41 and the basin frame 1 are fixed into a whole, the rigid support 41 provides rigid support for the elastic support 42, and the elastic support 42 is connected with the basin frame 1 through the rigid support 41; the outer ring of the elastic support 42 is fixed to the rigid support 41, the inner ring of the elastic support 42 is fixed to the portion of the voice coil 5 extending out of the central hole of the cone 3, and the elastic support 42 is located in the recessed space of the cone 3 and provides restoring force for the vibration of the voice coil 5 through the elastic support 42. With such an arrangement, the elastic support piece 42 can be disposed in the concave space of the cone 1, and the rigid support 41 can avoid the outer edge of the cone 1 without interfering with the vibration of the cone 3.
Further, in the present embodiment, the rigid bracket 41 includes a fixing ring 412 and a leg 411, wherein the fixing ring 412 is a ring-shaped structure, and the outer ring of the elastic support 42 is fixed to the fixing ring 412; one end of the leg 411 is fixed to the fixing ring 412, the other end of the leg 411 is fixed to the basin stand, and the number of the legs 411 is preferably multiple, and specifically may be two, three, four, five, six, seven, and so on. The plurality of legs 411 are uniformly distributed along the circumferential direction of the fixing ring 412, so that the uniformity and stability of the supporting force are improved. The legs 411 are preferably of a rigid plastic or metal material having sufficient structural strength to ensure stable rigid support of the retainer 412. The rigid support 41 is designed into a supporting leg 411 structure, so that the structural strength can be ensured, and the material consumption and the weight can be reduced. Of course, the rigid support 41 may also have other structures, such as a disk-shaped structure, as long as it can perform a rigid supporting function, and is not limited to the structure form illustrated in the embodiment.
Further, in the present embodiment, the leg 411 has an arch structure for avoiding a physical space required for the vibration of the cone 3. In the one end entering awl basin 3's the sunk space of landing leg 411, the other end of landing leg 411 is fixed in the main aspects of basin frame 1, avoids the elastic connection department between awl basin 3 and the basin frame 1 through domes to do not interfere the vibration of awl basin 3.
In this embodiment, the elastic supporting piece 42 includes an elastic ring, the elastic ring has one or more bending waveforms along its radial direction, an outer ring of the elastic ring is fixed to the rigid support 41, specifically to the fixing ring 412, and an inner ring of the elastic ring is fixed to a portion of the voice coil 5 extending out of the central hole by bonding or welding. The elastic ring provides a compliant force and a restoring force for the vibration of the voice coil 5. Of course, the elastic support 42 may have other structures, such as a plurality of elastic members arranged in the circumferential direction, and each of the elastic members is fixed to the fixing ring 412, as long as it can provide the compliant force and the restoring force, and is not limited to the structure form illustrated in the embodiment.
Further, in this embodiment, the elastic supporting piece 42 further includes a dust-proof piece, and the dust-proof piece is connected to the inner ring of the elastic ring in a sealing manner. The dustproof sheet is positioned on the upper part of the voice coil, and the opening of the voice coil 5 is covered by the dustproof sheet, so that the dustproof effect is achieved. The material of the dustproof sheet and the elastic ring can be the same or different. Of course, the elastic support 42 may comprise only an elastic ring, but the dust-proof effect is not as good as that of the dust-proof sheet.
Further, the material of the elastic support 42 is elastic rubber, foam, TPU (Thermoplastic polyurethane elastomer rubber for short, chinese explanation) or other materials capable of providing elasticity, as long as the material can provide elasticity, and is not limited to the material exemplified in the embodiment.
In this embodiment, the outer edge of the cone 3 is elastically connected with the frame 1 through the elastic ring 2, the elastic ring 2 has a bending wave shape along the radial direction thereof, and the elastic ring 2 provides a compliant force and a restoring force for the vibration of the cone 3.
The elastic ring 2 is preferably made of elastic rubber, foam or TPU (Thermoplastic polyurethane elastomer rubber, as explained in the chinese language), and may be made of other elastic materials. The elastic ring 2 and the cone 3 can be in a split structure or an integrated structure.
As shown in fig. 2, the present embodiment provides a specific magnetic circuit system 6, which includes a U-iron 61, a magnet 62, and a washer 63; wherein, the U-shaped iron 61 is fixed at the bottom of the basin frame 1; the magnet 62 is fixed in the U-shaped groove of the U-shaped iron 61; the washer 63 is located in the U-shaped groove and fixed to one end of the magnet 62 close to the cone 3, an annular magnetic gap is formed between the outer ring of the washer 63 and the magnet 62 and the inner ring of the U-shaped iron 61, the voice coil 5 is suspended in the magnetic gap, specifically, the coil part of the voice coil 5 is suspended in the magnetic gap and keeps concentricity with the magnetic gap, and magnetic field force generated by the magnetic gap provides a force factor for vibration of the voice coil 5.
Further, in this embodiment, the basin wall of basin frame 1 is hollow out construction, so set up, can guarantee the structural strength of basin frame 1, reduce material and weight simultaneously. Of course, the basin wall of the basin stand 1 can also be a curved surface structure.
Based on the speaker described in any of the above embodiments, an embodiment of the present invention further provides an electronic device, where the speaker in the electronic device is the speaker described in any of the above embodiments.
Because electronic equipment has adopted the speaker in this application, consequently, when the speaker satisfies the functional requirement, reduced the height dimension of speaker, install in electronic equipment, can further reduce electronic equipment's volume.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A loudspeaker, comprising:
a basin stand (1);
the magnetic circuit system (6) is arranged in the basin frame (1);
the cone basin (3) is positioned in the basin frame (1), the outer edge of the cone basin (3) is elastically fixed on the basin frame (1), a middle hole is formed in the basin bottom of the cone basin (3), and the basin bottom of the cone basin (3) is close to the magnetic circuit system (6);
a voice coil (5) passing through and fixed to the center hole;
centering bracket component (4), be located keeping away from of awl basin (3) one side of magnetic circuit (6), the outward flange of centering bracket component (4) with basin frame (1) is fixed, the inward flange of centering bracket component (4) with stretching out of voice coil loudspeaker voice coil (5) the position elastic fixation of mesopore, centering bracket component (4) set up in keeping away from of awl basin (3) in the sunk space of one side of magnetic circuit (6).
2. Loudspeaker according to claim 1, characterized in that the centering bracket assembly (4) comprises:
a rigid support (41), the outer edge of the rigid support (41) is fixed on the basin frame (1);
the outer ring of the elastic support piece (42) is fixed to the rigid support (41), the elastic support piece (42) extends out of the voice coil (5) the position of the middle hole is fixed, and the elastic support piece (42) is located in the concave space of the cone (3).
3. A loudspeaker according to claim 2, wherein the rigid support (41) comprises:
the outer ring of the elastic support piece (42) is fixed with the fixed ring (412);
the supporting leg (411), one end of the supporting leg (411) is fixed to the fixing ring (412), and the other end of the supporting leg (411) is fixed to the basin frame (1).
4. A loudspeaker according to claim 3, wherein the legs (411) have an arch for avoiding the physical space required for the cone (3) to vibrate.
5. A loudspeaker according to claim 2, wherein the resilient support (42) comprises a resilient ring having one or more bending waves in a radial direction thereof, the inner ring of the resilient ring being secured to the portion of the voice coil (5) extending through the central opening.
6. The loudspeaker of claim 5, wherein the elastic support piece further comprises a dust-proof piece, and the dust-proof piece is connected to the inner ring of the elastic ring in a sealing manner.
7. A loudspeaker according to claim 2, wherein the resilient support (42) is made of resilient rubber, foam or TPU.
8. A loudspeaker according to claim 1, characterized in that the outer edge of the cone (3) and the frame (1) are resiliently connected by a resilient ring (2), the resilient ring (2) having a meandering wave shape in its radial direction.
9. A loudspeaker according to any of claims 1 to 8, wherein the magnetic circuit comprises:
the U iron (61) is fixed at the bottom of the basin frame (1);
a magnet (62) fixed in the U-shaped groove of the U-shaped iron (61);
the washer (63) is located in the U-shaped groove and fixed at one end, close to the cone (3), of the magnet (62), the washer (63) and the outer ring of the magnet (62) and the inner ring of the U-shaped iron (61) form an annular magnetic gap, and the voice coil (5) is suspended in the magnetic gap.
10. An electronic device comprising a loudspeaker, characterized in that the loudspeaker is a loudspeaker according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110437691.1A CN112954555B (en) | 2021-04-22 | 2021-04-22 | Loudspeaker and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110437691.1A CN112954555B (en) | 2021-04-22 | 2021-04-22 | Loudspeaker and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112954555A CN112954555A (en) | 2021-06-11 |
| CN112954555B true CN112954555B (en) | 2022-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110437691.1A Active CN112954555B (en) | 2021-04-22 | 2021-04-22 | Loudspeaker and electronic equipment |
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| Country | Link |
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| CN (1) | CN112954555B (en) |
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| JPH06351098A (en) * | 1993-06-04 | 1994-12-22 | Matsushita Electric Ind Co Ltd | Speaker |
| JPH09238398A (en) * | 1995-12-28 | 1997-09-09 | Sony Corp | Speaker equipment |
| JP2004247825A (en) * | 2003-02-12 | 2004-09-02 | Minebea Co Ltd | Speaker |
| CN103781003A (en) * | 2014-02-21 | 2014-05-07 | 天津中环真美声学技术有限公司 | Inverted-mounted type loudspeaker |
| CN109348378A (en) * | 2018-10-18 | 2019-02-15 | 北京新能源汽车股份有限公司 | A kind of loudspeaker and automobile |
| CN209949402U (en) * | 2019-06-05 | 2020-01-14 | 惠州迪芬尼声学科技股份有限公司 | Ultra-thin horn |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1141696A (en) * | 1997-07-18 | 1999-02-12 | Sony Corp | Speaker |
| TW200401580A (en) * | 2002-04-25 | 2004-01-16 | Koninkl Philips Electronics Nv | Loudspeaker with a first and a second diaphragm body |
| JP4440001B2 (en) * | 2004-06-02 | 2010-03-24 | フォスター電機株式会社 | Speaker |
| CN101346011A (en) * | 2008-07-02 | 2009-01-14 | 无锡杰夫电声有限公司 | Thin type loudspeaker with reversing magnetic structure |
| CN201422159Y (en) * | 2009-03-31 | 2010-03-10 | 国光电器股份有限公司 | Ultrathin loudspeaker and electronic product employing same |
| KR101062039B1 (en) * | 2009-08-27 | 2011-09-05 | 신정열 | Slim speakers |
| CN111163405A (en) * | 2019-11-25 | 2020-05-15 | 李世煌 | Ultrathin loudspeaker, loudspeaker box and electronic product |
| CN211378243U (en) * | 2019-11-25 | 2020-08-28 | 李世煌 | Ultrathin loudspeaker, loudspeaker box and electronic product |
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2021
- 2021-04-22 CN CN202110437691.1A patent/CN112954555B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06351098A (en) * | 1993-06-04 | 1994-12-22 | Matsushita Electric Ind Co Ltd | Speaker |
| JPH09238398A (en) * | 1995-12-28 | 1997-09-09 | Sony Corp | Speaker equipment |
| JP2004247825A (en) * | 2003-02-12 | 2004-09-02 | Minebea Co Ltd | Speaker |
| CN103781003A (en) * | 2014-02-21 | 2014-05-07 | 天津中环真美声学技术有限公司 | Inverted-mounted type loudspeaker |
| CN109348378A (en) * | 2018-10-18 | 2019-02-15 | 北京新能源汽车股份有限公司 | A kind of loudspeaker and automobile |
| CN209949402U (en) * | 2019-06-05 | 2020-01-14 | 惠州迪芬尼声学科技股份有限公司 | Ultra-thin horn |
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| CN112954555A (en) | 2021-06-11 |
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