CN113242497B - High-strength anti-breaking loudspeaker frame - Google Patents
High-strength anti-breaking loudspeaker frame Download PDFInfo
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- CN113242497B CN113242497B CN202110703197.5A CN202110703197A CN113242497B CN 113242497 B CN113242497 B CN 113242497B CN 202110703197 A CN202110703197 A CN 202110703197A CN 113242497 B CN113242497 B CN 113242497B
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- loudspeaker
- frame
- basin frame
- belt
- speaker
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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
-
- 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
- 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)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
A high-strength anti-break loudspeaker frame belongs to the field of loudspeakers; the anti loudspeaker basin frame that breaks of high strength still includes including the basin frame that is used for assembling the speaker: a power-on assembly disposed between the frame and the speaker for powering the speaker on when the speaker is mounted on the frame; the locking mechanisms are symmetrically arranged in the basin frame and are used for keeping the loudspeaker and the basin frame in a stable connection state when the loudspeaker is assembled on the basin frame; the power component, the power component is connected locking mechanism and the speaker to the in-process of assembly is accomplished in the motion of basin frame inside, the power component drive locking mechanism draws in, realizes the quick dismantlement of speaker, simple structure, and the practicality is strong.
Description
Technical Field
The invention belongs to the technical field of loudspeakers, and particularly relates to a high-strength anti-breaking loudspeaker frame.
Background
The speaker is also called a horn. It is a very common electroacoustic transducer, and can be found in electronic and electric equipment for producing sound.
The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the paper cone or the diaphragm vibrate and generate resonance (resonance) with the surrounding air through electromagnetic, piezoelectric or electrostatic effect to make sound.
In the use of the loudspeaker, the weakness of the loudspeaker is considered, the basin frame is usually arranged outside the loudspeaker to improve the rigidity of the loudspeaker, but the connection between the basin frame and the loudspeaker is mostly fixed, so that the loudspeaker is inconvenient to replace or overhaul, and the high-strength anti-breaking loudspeaker basin frame is provided for the reason, so that the loudspeaker basin frame can be quickly disassembled.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art and provides a high-strength anti-breaking loudspeaker frame.
The technical problem of the invention is mainly solved by the following technical scheme: a high strength, break resistant speaker frame, comprising a frame for assembling a speaker, further comprising:
a power-on assembly disposed between the frame and the speaker for powering the speaker on when the speaker is mounted on the frame;
the locking mechanisms are symmetrically arranged in the basin frame and are used for keeping the loudspeaker and the basin frame in a stable connection state when the loudspeaker is assembled on the basin frame;
the power assembly is connected with the locking mechanism and the loudspeaker, and the loudspeaker moves towards the inner part of the basin frame to complete the assembly process, and the power assembly drives the locking mechanism to be folded.
Preferably, the electrifying assembly comprises two electrode holders fixedly arranged on the basin frame and an electrode which is matched with the electrode holders to electrify the loudspeaker;
the loudspeaker is characterized in that an electromagnet is fixedly arranged at the lower part of the loudspeaker, the electrode is fixedly arranged at the lower part of the electromagnet, and grooves are symmetrically formed in two sides of the electromagnet.
Preferably, the locking mechanism comprises a meshing structure arranged in the basin frame, an elastic component which is connected with the meshing structure and used for fixing the loudspeaker on the basin frame when being matched with the electromagnet, and an unlocking structure which is connected with the elastic component and used for releasing the fixed state of the loudspeaker;
wherein, the meshing structure with power component passes through No. two belt connections.
Preferably, the engaging structure comprises a transverse plate fixedly connected with the power assembly and a transverse plate rotatably mounted on the transverse plate
A gear, a rack plate disposed on the elastic assembly and engaged with the gear;
the gear is connected with the power assembly through the second belt.
Preferably, the elastic assembly comprises a fixed sleeve fixedly mounted on the transverse plate, a spring sleeve arranged on the fixed sleeve in a sliding manner through a limiting structure, a spring arranged in the spring sleeve, and a support rod penetrating through the spring sleeve and connected with the spring;
the lower part fixed mounting of spring sleeve has the rack board, the bracing piece is close to the one end of electro-magnet is rotated and is installed the pulley, the pulley with the recess adaptation, the other end fixed mounting of bracing piece has the stopper, the stopper with the unblock structure adaptation.
Preferably, the limiting structure comprises a protrusion fixedly mounted on the outer surface of the spring sleeve and a limiting groove matched with the protrusion and formed in the inner wall of the fixing sleeve.
Preferably, the unlocking structure comprises an unlocking rod rotatably mounted on the transverse plate, a knob connected with one end of the unlocking rod through a traction rope and rotatably mounted on the basin frame, and the other end of the unlocking rod is matched with the limiting block.
Preferably, the power assembly comprises fixing pieces symmetrically arranged on the electromagnet, a fixing rod fixedly arranged on the basin frame, two belt wheels rotatably arranged on the fixing rod, a first belt sleeved on the two belt wheels, and a lifting piece fixedly arranged on the first belt and matched with the fixing pieces;
wherein, the belt wheel on the upper part is connected with the gear through the second belt.
The invention has the following beneficial effects:
in the use, when the speaker takes place to damage and need to be changed, can realize the separation of speaker and basin frame through locking mechanism, make it dismantle simpler, when new speaker assembles on the basin frame simultaneously, power component can drive locking mechanism and fix new speaker on the basin frame, realizes quick fixed, and under the effect of circular telegram subassembly, when the speaker assembles on the basin frame, can make the speaker circular telegram, makes it can be used fast.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of section A of FIG. 1;
FIG. 3 is a schematic view of the construction of the elastic member of the present invention;
FIG. 4 is a schematic view of a partial connection relationship between a power assembly and an unlocking structure according to the present invention;
in the figure: 1. a basin stand; 2. an electromagnet; 3. an electrode; 4. an electrode holder; 5. a fixing member; 6. a lifting member; 7. a first belt; 8. a pulley; 9. a second belt; 10. a gear; 11. a rack plate; 12. a spring sleeve; 13. a lock lever; 14. a groove; 15. a pulley; 16. a spring; 17. a fixed sleeve; 18. a protrusion; 19. a limiting block; 20. an unlocking lever; 21. a knob.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a high strength, break-resistant loudspeaker frame, as shown in fig. 1-4, comprising a frame 1 for mounting a loudspeaker, further comprising:
the power-on component is arranged between the basin stand 1 and the loudspeaker and is used for powering on the loudspeaker when the loudspeaker is assembled on the basin stand 1;
the locking mechanisms are symmetrically arranged in the basin frame 1 and are used for keeping the loudspeaker and the basin frame 1 in a stable connection state when the loudspeaker is assembled on the basin frame 1;
the power assembly is connected with the locking mechanism and the loudspeaker, and the loudspeaker moves towards the inner part of the basin frame 1 to complete the assembly process, and the power assembly drives the locking mechanism to be folded.
In the embodiment of the invention, when the loudspeaker is damaged and needs to be replaced, the loudspeaker can be separated from the basin frame 1 through the locking mechanism, so that the loudspeaker is simpler to disassemble, meanwhile, when a new loudspeaker is assembled on the basin frame 1, the power assembly can drive the locking mechanism to fix the new loudspeaker on the basin frame 1, so that the loudspeaker is quickly fixed, and under the action of the electrifying assembly, when the loudspeaker is assembled on the basin frame 1, the loudspeaker is electrified, so that the loudspeaker can be quickly used;
in the embodiment of the invention, the edge of the frame 1 is provided with a plurality of vent holes, so that when the loudspeaker works, the air between the frame 1 and the loudspeaker can be balanced with the outside, and the paper cone outside the loudspeaker is prevented from being damaged;
in the embodiment of the invention, the edge of the frame 1, which is contacted with the loudspeaker, is provided with the sealing ring so as to realize that the frame 1 and the loudspeaker have a certain elasticity, so that the loudspeaker can work better;
in the embodiment of the invention, the material of the basin stand 1 is preferably a material with mechanical property, high and low temperature resistance and good dimensional stability, so as to improve the strength and the fracture resistance of the basin stand.
In one embodiment, the power-on assembly comprises two electrode holders 4 fixedly mounted on the frame 1, and an electrode 3 which is matched with the electrode holders 4 to power on the loudspeaker;
the lower part of the loudspeaker is fixedly provided with an electromagnet 2, the lower part of the electromagnet 2 is fixedly provided with the electrode 3, and the two sides of the electromagnet 2 are symmetrically provided with grooves 14.
In the embodiment of the invention, when the loudspeaker is transferred to the basin frame 1, the electrode 3 is combined with the electrode seat 4 to electrify the electromagnet 2, and the replacement difficulty caused by welding a circuit again is not increased.
According to one embodiment, the locking mechanism comprises a meshing structure arranged in the basin frame 1, an elastic component which is connected with the meshing structure and used for fixing the loudspeaker on the basin frame 1 when being matched with the electromagnet 2, and an unlocking structure which is connected with the elastic component and used for releasing the loudspeaker fixing state;
wherein, the meshing structure with power component passes through No. two belts 9 and is connected.
In the embodiment of the invention, when the loudspeaker is arranged in the basin frame 1, the power assembly is driven to work, the power assembly drives the meshing structure to rotate, so that the elastic assembly is driven to move outwards until the loudspeaker is fixed on the basin frame 1, and when the loudspeaker needs to be replaced, the fixed state of the loudspeaker can be released through the unlocking structure, so that the loudspeaker is simpler to disassemble.
In one embodiment, the meshing structure comprises a transverse plate fixedly connected with a power assembly, a gear 10 rotatably mounted on the transverse plate, and a rack plate 11 arranged on the elastic assembly and meshed with the gear 10;
the gear 10 is connected with the power assembly through the second belt 9.
In the embodiment of the invention, when the loudspeaker moves towards the interior of the frame 1, the power assembly moves and drives the gear 10 to rotate through the second belt 9, so that the rack plate 11 meshed with the gear 10 moves and drives the elastic assembly to move towards the loudspeaker, and the elastic assembly is matched with the groove 14 to fix the loudspeaker on the frame 1.
In one embodiment, the elastic assembly includes a fixed sleeve 17 fixedly installed on the transverse plate, a spring sleeve 12 slidably disposed on the fixed sleeve 17 through a limiting structure, a spring 16 disposed in the spring sleeve 12, and a support rod 13 penetrating through the spring sleeve 12 and connected to the spring 16;
wherein, the lower part fixed mounting of spring sleeve 12 has rack plate 11, bracing piece 13 is close to the one end of electro-magnet 2 is rotated and is installed pulley 15, pulley 15 with recess 14 adaptation, the other end fixed mounting of bracing piece 13 has stopper 19, stopper 19 with unblock structure adaptation.
In the embodiment of the invention, when the gear 10 rotates, the rack plate 11 is driven to move towards the loudspeaker and drives the spring sleeve 12 to move towards the loudspeaker, and the spring 16 is compressed until the pulley 15 on the support rod 13 is clamped with the groove 14 and the loudspeaker is fixed;
in the embodiment of the invention, when the fixed state of the loudspeaker needs to be released, the support rod 13 is pulled outwards through the unlocking structure, so that the pulley 15 is separated from the groove 14, the spring 16 is still in a compressed state, and when the pulley 15 is separated from the groove 14, the spring 16 pushes the spring sleeve 12 reversely, and the power assembly is driven to move reversely through the meshing structure, so that the loudspeaker is bounced.
In one embodiment, the limiting structure comprises a protrusion 18 fixedly installed on the outer surface of the spring sleeve 12 and a limiting groove adapted to the protrusion 18 and formed on the inner wall of the fixing sleeve 17.
In the embodiment of the invention, the spring sleeve 12 cannot rotate by arranging the protrusion 18 and the limiting groove, so that the rack plate 11 and the gear 10 can be better meshed;
it should be noted that, in the present application, the cross section of the outer surface of the spring sleeve 12 and the cross section of the inner wall of the fixing sleeve 17 are both circular, but they may be square, and in the case of square, the protrusion 18 and the limiting groove do not need to be provided.
The utility model provides an embodiment, the unlocking structure including rotate install unblock lever 20 on the diaphragm, through the haulage rope with the one end of unblock lever 20 is connected and is rotated and install knob 21 on basin frame 1, the other end of unblock lever 20 with stopper 19 adaptation.
In the embodiment of the invention, when the loudspeaker needs to be released from the fixed state, the pull rope is wound by the rotary knob 21 to pull the lower part of the unlocking rod 20 to swing, at the moment, the upper part of the unlocking rod 20 is matched with the limiting block 19 to pull the supporting rod 13 outwards until the pulley 15 is separated from the groove 14, at the moment, the spring 16 releases elastic potential energy to drive the spring sleeve 12 to move outwards, and under the action of the rack plate 11, the driving gear 10 rotates reversely, acts on the belt pulley 8 at the same time to drive the first belt 7 to rotate reversely, at the moment, the loudspeaker bounces from the basin frame 1 to realize unlocking.
In one embodiment, the power assembly comprises fixing pieces 5 symmetrically arranged on the electromagnet 2 and fixedly arranged on the electromagnet
The basin stand comprises a fixing rod on the basin stand 1, two belt wheels 8 rotatably mounted on the fixing rod, a first belt 7 sleeved on the two belt wheels 8, and a lifting piece 6 fixedly mounted on the first belt 7 and matched with the fixing piece 5;
wherein, the upper belt wheel 8 is connected with the gear 10 through the second belt 9.
In the embodiment of the invention, when the loudspeaker moves towards the interior of the basin frame 1 for assembly, the fixing part 5 arranged on the electromagnet 2 is combined with the lifting part 6 to drive the first belt 7 to move downwards and drive the belt wheel 8 to rotate, and the belt wheel 8 drives the gear 10 to rotate through the second belt 9.
The principle of the invention is as follows: when the loudspeaker is installed, in the process of assembling the loudspeaker into the basin frame 1, the electromagnet 2 moves to drive the fixing piece 5 to be combined with the lifting piece 6, in the process of continuing to move, the first belt 7 moves, the first belt 7 drives the belt wheel 8 to rotate, power is transmitted to the gear 10 through the second belt 9, the gear 10 drives the rack plate 11 to move to drive the spring sleeve 12 to move towards the loudspeaker, meanwhile, the spring 16 is compressed, when the pulley 15 is clamped with the groove 14, the loudspeaker is fixed, and at the moment, the electrode 3 is combined with the electrode seat 4 to electrify the loudspeaker;
when the loudspeaker is detached, the traction rope is wound through the rotary knob 21 to swing the lower portion of the unlocking rod 20, the upper portion of the unlocking rod 20 is matched with the limiting block 19 to pull the supporting rod 13 outwards to the pulley 15 to be separated from the groove 14, the spring 16 releases elastic potential energy at the moment, the spring sleeve 12 is driven to move outwards, the driving gear 10 rotates reversely under the action of the rack plate 11, meanwhile, the driving gear acts on the belt wheel 8 to drive the first belt 7 to rotate reversely, and the loudspeaker bounces from the basin frame 1 at the moment to realize unlocking.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (4)
1. The utility model provides an anti loudspeaker frame that breaks of high strength, anti loudspeaker frame that breaks of high strength still includes including basin frame (1) that is used for assembling the speaker:
an energizing assembly arranged between the frame (1) and the loudspeaker for energizing the loudspeaker when the loudspeaker is mounted on the frame (1);
the locking mechanisms are symmetrically arranged in the basin frame (1) and are used for keeping the loudspeaker and the basin frame (1) in a stable connection state when the loudspeaker is assembled on the basin frame;
the power assembly is connected with the locking mechanism and the loudspeaker, and drives the locking mechanism to fold in the process that the loudspeaker moves towards the interior of the basin frame (1) to finish assembly;
the electrifying assembly comprises two electrode holders (4) fixedly arranged on the basin frame (1) and an electrode (3) which is matched with the electrode holders (4) to electrify the loudspeaker;
the lower part of the loudspeaker is fixedly provided with an electromagnet (2), the lower part of the electromagnet (2) is fixedly provided with the electrode (3), and grooves (14) are symmetrically formed in two sides of the electromagnet (2);
the locking mechanism comprises a meshing structure arranged in the basin frame (1), an elastic component which is connected with the meshing structure and used for fixing the loudspeaker on the basin frame (1) when being matched with the electromagnet (2), and an unlocking structure which is connected with the elastic component and used for releasing the fixed state of the loudspeaker;
wherein the meshing structure is connected with the power assembly through a second belt (9);
the meshing structure comprises a transverse plate fixedly connected with the power assembly, a gear (10) rotatably mounted on the transverse plate, and a rack plate (11) arranged on the elastic assembly and meshed with the gear (10);
the gear (10) is connected with the power assembly through the second belt (9);
the power assembly comprises fixing pieces (5) symmetrically arranged on the electromagnet (2), a fixed rod fixedly arranged on the basin frame (1), two belt wheels (8) rotatably arranged on the fixed rod, a first belt (7) sleeved on the two belt wheels (8), and a lifting piece (6) fixedly arranged on the first belt (7) and matched with the fixing pieces (5);
wherein the belt wheel (8) positioned at the upper part is connected with the gear (10) through the second belt (9).
2. A high strength, break resistant speaker frame as claimed in claim 1, wherein: the elastic assembly comprises a fixed sleeve (17) fixedly installed on the transverse plate, a spring sleeve (12) arranged on the fixed sleeve (17) in a sliding mode through a limiting structure, a spring (16) arranged in the spring sleeve (12), and a supporting rod (13) penetrating through the spring sleeve (12) and connected with the spring (16);
wherein, the lower part fixed mounting of spring sleeve (12) has rack plate (11), bracing piece (13) are close to the one end of electro-magnet (2) is rotated and is installed pulley (15), pulley (15) with recess (14) adaptation, the other end fixed mounting of bracing piece (13) has stopper (19), stopper (19) with the unblock structure adaptation.
3. A high strength, break resistant speaker frame as claimed in claim 2, wherein: the limiting structure comprises a bulge (18) fixedly mounted on the outer surface of the spring sleeve (12) and a limiting groove which is matched with the bulge (18) and is formed in the inner wall of the fixing sleeve (17).
4. A high strength, break resistant speaker frame as claimed in claim 2, wherein: the unlocking structure comprises an unlocking rod (20) which is rotatably installed on the transverse plate, a knob (21) which is connected with one end of the unlocking rod (20) through a traction rope and rotatably installed on the basin frame (1), and the other end of the unlocking rod (20) is matched with the limiting block (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703197.5A CN113242497B (en) | 2021-06-24 | 2021-06-24 | High-strength anti-breaking loudspeaker frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110703197.5A CN113242497B (en) | 2021-06-24 | 2021-06-24 | High-strength anti-breaking loudspeaker frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113242497A CN113242497A (en) | 2021-08-10 |
| CN113242497B true CN113242497B (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110703197.5A Active CN113242497B (en) | 2021-06-24 | 2021-06-24 | High-strength anti-breaking loudspeaker frame |
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| CN (1) | CN113242497B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0400597A2 (en) * | 1989-06-02 | 1990-12-05 | Nokia (Deutschland) GmbH | Loudspeaker with bayonet fixing |
| CN206602658U (en) * | 2017-03-30 | 2017-10-31 | 歌尔丹拿音响有限公司 | Loudspeaker |
| CN207820235U (en) * | 2017-12-07 | 2018-09-04 | 东莞市德凯电声科技有限公司 | A kind of speaker frame assembling jig |
| CN207947903U (en) * | 2018-02-11 | 2018-10-09 | 广州市嘉允五金工业有限公司 | A kind of height adjustable speaker frame |
| CN207995379U (en) * | 2018-02-24 | 2018-10-19 | Tcl通力电子（惠州）有限公司 | loudspeaker assembly |
| CN208174958U (en) * | 2018-04-04 | 2018-11-30 | 陈艳 | A kind of Embedded Internet of Things sound equipment |
| CN209435414U (en) * | 2019-04-12 | 2019-09-24 | 常州亮声科技有限公司 | A kind of speaker frame assembling jig |
| CN209435382U (en) * | 2019-04-12 | 2019-09-24 | 常州亮声科技有限公司 | A kind of anti-loosening loudspeaker connection structure |
| CN210351597U (en) * | 2019-09-24 | 2020-04-17 | 天津真美联合电子股份有限公司 | Assembled intelligent networking speaker |
| CN212064354U (en) * | 2020-05-22 | 2020-12-01 | 嵊州市华英电声厂 | Novel sectional type is copied paper speaker cone |
-
2021
- 2021-06-24 CN CN202110703197.5A patent/CN113242497B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0400597A2 (en) * | 1989-06-02 | 1990-12-05 | Nokia (Deutschland) GmbH | Loudspeaker with bayonet fixing |
| CN206602658U (en) * | 2017-03-30 | 2017-10-31 | 歌尔丹拿音响有限公司 | Loudspeaker |
| CN207820235U (en) * | 2017-12-07 | 2018-09-04 | 东莞市德凯电声科技有限公司 | A kind of speaker frame assembling jig |
| CN207947903U (en) * | 2018-02-11 | 2018-10-09 | 广州市嘉允五金工业有限公司 | A kind of height adjustable speaker frame |
| CN207995379U (en) * | 2018-02-24 | 2018-10-19 | Tcl通力电子（惠州）有限公司 | loudspeaker assembly |
| CN208174958U (en) * | 2018-04-04 | 2018-11-30 | 陈艳 | A kind of Embedded Internet of Things sound equipment |
| CN209435414U (en) * | 2019-04-12 | 2019-09-24 | 常州亮声科技有限公司 | A kind of speaker frame assembling jig |
| CN209435382U (en) * | 2019-04-12 | 2019-09-24 | 常州亮声科技有限公司 | A kind of anti-loosening loudspeaker connection structure |
| CN210351597U (en) * | 2019-09-24 | 2020-04-17 | 天津真美联合电子股份有限公司 | Assembled intelligent networking speaker |
| CN212064354U (en) * | 2020-05-22 | 2020-12-01 | 嵊州市华英电声厂 | Novel sectional type is copied paper speaker cone |
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| Publication number | Publication date |
|---|---|
| CN113242497A (en) | 2021-08-10 |
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