CN112399316B - Coaxial two-voice coil two-way regulation type low-frequency vibration horn - Google Patents
Coaxial two-voice coil two-way regulation type low-frequency vibration horn Download PDFInfo
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- CN112399316B CN112399316B CN201910762261.XA CN201910762261A CN112399316B CN 112399316 B CN112399316 B CN 112399316B CN 201910762261 A CN201910762261 A CN 201910762261A CN 112399316 B CN112399316 B CN 112399316B
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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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- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration horn, which is characterized in that: the invention adopts a structure that a vibration system voice coil and a sounding system voice coil are independently separated, wherein the structure comprises a rear cover, a vibration voice coil, a washer sheet, a spring sheet fixing sleeve, a vibration spring sheet, a cylindrical magnet sleeve, an annular magnet, a T-shaped washer, a support, a sounding voice coil, a vibration sound film, a sound hole, a central hole, a concentric arc-shaped washer strip, a washer column cap, a rear cover buckle groove, a support ring plate, a spring sheet clamping groove, a sound film bracket, a PCB lead plate and tuning cotton. The problems that vibration of a low-frequency vibration horn in the prior art cannot be independently adjusted and switched on and off, and the use requirement of bidirectional selection of vibration and non-vibration cannot be met are reasonably solved. The defects of the prior art are overcome.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration loudspeaker.
Background
The low frequency vibration loudspeaker of prior art adopts single voice coil or the integrative structural system of non-coaxial two voice coil loudspeaker voice coil configuration loudspeaker sound production and vibrator, causes vibration and sound production to obscure each other, and sound production and trembler share same voice coil loudspeaker voice coil, can't distinguish and adjust sound production electric current and vibration electric current, consequently, the unable independent regulation of vibration and switch can't realize the user demand of vibration and the two-way selection of not vibrating.
The invention adopts a structure that a vibration system voice coil and a sounding system voice coil are independently separated, wherein the structure comprises a rear cover, a vibration voice coil, a washer sheet, a spring sheet fixing sleeve, a vibration spring sheet, a cylindrical magnet sleeve, an annular magnet, a T-shaped washer, a support, a sounding voice coil, a vibration sound film, a sound hole, a central hole, a concentric arc-shaped washer strip, a washer column cap, a rear cover buckle groove, a support ring plate, a spring sheet clamping groove, a sound film bracket, a PCB lead plate and tuning cotton. The defects of the prior art are overcome.
Disclosure of Invention
The invention aims to provide a coaxial double-voice-coil bidirectional adjustment type low-frequency vibration horn, which reasonably solves the problems that the vibration of the low-frequency vibration horn in the prior art cannot be independently adjusted and switched on and off, and the use requirement of bidirectional selection of vibration and non-vibration cannot be realized.
The invention adopts the following technical scheme:
the utility model provides a coaxial two voice coil loudspeaker voice coil two-way regulation formula low frequency vibration loudspeaker, includes back lid, vibration voice coil loudspeaker voice coil, china department piece, the fixed cover of shell fragment, vibration shell fragment, cylinder magnet cover, annular magnet, T type china department, support, sound production voice coil loudspeaker voice coil, vibration sound membrane, sound hole, centre bore, concentric arc piece strip, china department column cap, back lid catching groove, support collar plate, shell fragment draw-in groove, sound membrane bracket, PCB lead plate, tuning cotton, its characterized in that:
the coaxial double-voice-coil bidirectional-adjustment low-frequency vibration horn adopts the technical scheme that a sounding voice coil and a vibration voice coil are respectively and coaxially arranged on two sides of an annular magnet, the sounding voice coil, the annular magnet and the vibrating sound film are connected into a whole to realize sounding, and an independent horn sounding structure is formed by the cylindrical magnet sleeve, the annular magnet, the T-shaped washer, the sounding voice coil and the vibrating sound film, the vibration voice coil, the annular magnet and the vibration elastic sheet are combined to realize vibration, and an independent low-frequency vibration structure is formed by the vibration voice coil, the washer sheet, the elastic sheet fixing sleeve, the vibration elastic sheet, the cylindrical magnet sleeve, the annular magnet and the T-shaped washer, the vibration elastic sheet adopts the concentric arc-shaped elastic sheet strips integrally arranged on the stainless steel circular plate, thereby reducing the self weight, enhancing the vibration intensity and sensitivity, the sounding voice coil and the vibration voice coil are switched on and off by adopting a controller, and the volume and the vibration quantity of the low-frequency vibration loudspeaker are adjusted;
the rear cover is in a cylindrical cover shape, the rear cover plate is provided with sound holes in a flower shape or a geometric regular arrangement, the sound holes are covered with oval tuning cotton, the center inside the rear cover is fixedly bonded with a vibration voice coil, a washer sheet is arranged at the upper end of the vibration voice coil in a linking manner, the washer sheet is provided with a central hole, the periphery close to the central hole is in contact connection with the upper end of the vibration voice coil, a spring sheet fixing sleeve is arranged at the periphery of the washer sheet and is in a cylindrical tubular shape, the inner wall of the spring sheet fixing sleeve, which is linked with the washer sheet and the spring sheet fixing sleeve, is provided with a cylindrical magnet sleeve, the inner wall of the cylindrical magnet sleeve, which is linked with the washer sheet and the cylindrical magnet sleeve, is provided with an annular magnet, the annular magnet is provided with a central hole, the upper end of the spring sheet fixing sleeve is linked with a vibration spring sheet, and the vibration spring sheet is provided with a central hole and a concentric arc-shaped spring sheet strip, the diameter of the central hole is equal to the inner diameter of the elastic sheet fixing sleeve, a T-shaped washer is arranged on the upper opening of the elastic sheet fixing sleeve, the upper end of the annular magnet and the central hole cover of the vibration elastic sheet in a pressing mode, a washer column head is arranged on one side of the T-shaped washer and penetrates through the central hole formed in the annular magnet, the tail end of the washer column head is arranged in the central hole formed in the washer sheet and is close to the upper end of the vibration voice coil, a support is arranged on the upper end face of the T-shaped washer and the upper end face of the vibration elastic sheet in a connecting mode, the support is cylindrical, a support ring plate is radially arranged in the inner portion of the support ring plate and close to the middle of the support ring plate, the support ring plate is provided with sound holes which are circularly arranged in the central hole and the hole periphery, a rear cover buckling groove which is retracted at a right angle is formed in the outer wall of the lower end of the support ring plate, a sound film bracket is arranged in the inner portion of the upper end of the elastic sheet clamping groove in a clamping manner and is connected with the lower plate surface of the support ring plate, t type china department with the centre bore that the supporting ring board was equipped with links up, links up T type china department with the centre bore that the supporting ring board was equipped with the sound production voice coil loudspeaker voice coil, sound production voice coil loudspeaker voice coil upper end adhesive bonding is fixed integrative and is equipped with the vibration sound membrane, the vibration sound membrane is concentric circle center ripple curved surface structure, and is fixed to be set up in the sound membrane bracket, back lid catching groove with back lid lock joint is connected, the outer bottom surface of back lid is equipped with cover on the sound hole and is equipped with the tuning cotton, back lid outer bottom surface one side is close to the edge and is equipped with the PCB lead wire board, the PCB lead wire board be equipped with the circuit with sound production voice coil loudspeaker voice coil, vibration voice coil loudspeaker with controller turn-on connection constitutes a coaxial two-way regulation formula low frequency vibration loudspeaker.
Furthermore, the parts of the coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration horn are fixed by adopting adhesive bonding.
Further, the bracket includes, but is not limited to, engineering plastics or metal materials.
Further, the diameter of the sounding voice coil is larger than the diameter of the vibration voice coil.
Further, the T-shaped washer is provided with a washer column head, the washer column head is cylindrical, the washer column head is axially and integrally arranged at the center of the washer plate, and the diameter of the washer plate is equal to or smaller than that of a central hole formed in the washer plate.
Further, the controller is provided with a master control IC, a volume switch adjusting button, and a vibration switch adjusting button, wherein the volume switch adjusting button is connected with the master control IC and the sounding voice coil, the vibration switch adjusting button is connected with the master control IC and the vibration voice coil, the master control IC is provided with pins 1-16, wherein the pins 1 and 2 are input power, the pins 15 and 16 are output power, the pins 1-9 are external management interface circuits including but not limited to USB and memory card, the pin 10 is a microphone circuit, the pins 15 and 16 are logically associated with the pin 10, the pins 11 and 12 are respectively vibration and audio output circuits, an audio control module is connected with the pins, the audio control module is provided with an audio control IC3, the audio control IC3 is logically associated with the pin 1, and the audio control IC3 is provided with circuits respectively connected with the volume switch adjusting button and the sounding voice coil, The vibration switch adjusting button is connected with the vibration voice coil, the leg wire 13 is a reference voltage circuit, and the leg wire 14 is a vibration and audio output negative circuit.
The beneficial technical effects of the invention are as follows:
the invention discloses a coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration horn, which reasonably solves the problems that the vibration of the low-frequency vibration horn in the prior art cannot be independently adjusted and switched on and off, and the use requirement of bidirectional selection of vibration and non-vibration cannot be realized.
The invention adopts a structure that a vibration system voice coil and a sounding system voice coil are independently separated, wherein the structure comprises a rear cover, a vibration voice coil, a washer sheet, a spring sheet fixing sleeve, a vibration spring sheet, a cylindrical magnet sleeve, an annular magnet, a T-shaped washer, a support, a sounding voice coil, a vibration sound film, a sound hole, a central hole, a concentric arc-shaped washer strip, a washer column cap, a rear cover buckle groove, a support ring plate, a spring sheet clamping groove, a sound film bracket, a PCB lead plate and tuning cotton. The defects of the prior art are overcome.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the release structure of the present invention.
Fig. 3 is a cross-sectional schematic view of the stent of the present invention.
Fig. 4 is a circuit diagram of the present invention.
Shown in the figure: 1-rear cover, 2-vibration voice coil, 3-washer, 4-spring plate fixing sleeve, 5-vibration spring plate, 6-cylindrical magnet sleeve, 7-annular magnet, 8-T-shaped washer, 9-bracket, 10-sounding voice coil, 11-vibration sound film, 12-sound hole, 13-center hole, 14-concentric arc-shaped spring plate strip, 15-washer column cap, 16-rear cover buckle groove, 17-support ring plate, 18-spring plate clamping groove, 19-sound film bracket, 20-PCB lead plate and 21-tone tuning cotton.
Detailed Description
The invention will be better understood by the following description of embodiments thereof, but the applicant's specific embodiments are not intended to limit the invention to the particular embodiments shown, and any changes in the definition of parts or features and/or in the overall structure, not essential changes, are intended to define the scope of the invention.
Example (b):
fig. 1-4 show a coaxial two-voice coil two-way regulation formula low frequency vibration loudspeaker, including back lid 1, vibration voice coil 2, china department piece 3, the fixed cover of shell fragment 4, vibration shell fragment 5, cylinder magnet cover 6, ring magnet 7, T type china department 8, support 9, sound production voice coil 10, vibration voice diaphragm 11, sound hole 12, centre bore 13, concentric arc shell fragment strip 14, china department column cap 15, back lid catching groove 16, support collar plate 17, shell fragment draw-in groove 18, voice diaphragm bracket 19, PCB lead plate 20, tuning cotton 21.
Firstly, a rear cover 1 is arranged, sound holes 12 are arranged on the rear cover 1, and oval tuning cotton 21 is covered and arranged on the sound holes 12 outside the rear cover 1. The PCB lead plate 20 is fixedly arranged on the outer bottom surface of the rear cover 1 close to one side edge in an adhesive mode, and the vibration voice coil 2 is arranged at the center of the inner bottom surface of the rear cover 1. Linking up the upper end of vibration voice coil loudspeaker voice coil 2 sets up china department piece 3 the periphery of china department piece 3 links up and sets up the fixed cover of shell fragment 4 the center of china department piece 3 sets up centre bore 13, is close to the periphery of centre bore 13 with the upper end of vibration voice coil loudspeaker voice coil 2 links up the inside of the fixed cover of shell fragment 4 the peripheral department of being close to of china department 3 sets up cylinder magnet cover 6 link up in the cylinder magnet cover 6 china department piece 3 sets up annular magnet 7 the last port of the fixed cover of shell fragment 4 sets up vibration shell fragment 5.
Then a vibration spring plate 5 is arranged, a central hole 13 and a concentric arc-shaped spring plate strip 14 are arranged on the vibration spring plate 5, a T-shaped washer 8 is arranged on the central hole 13 arranged on the vibration spring plate 5, the upper end of a spring plate fixing sleeve 4 and the upper cover of an annular magnet 7 in a pressing mode, and a washer column head 15 is integrally arranged on the T-shaped washer 8. And (3) the washer column cap 15 passes through the central holes 13 of the vibration elastic sheet 5 and the annular magnet 7 and then is inserted into the central hole 13 of the washer sheet 3.
Finally, a support 9, a sounding voice coil 10 and a vibrating sound film 11 are arranged, a support ring plate 17 is radially arranged in the support 9 close to the middle, a center hole 13 is arranged in the center of the support ring plate 17, a sound hole 12 is arranged on the plate ring surrounding the center hole 13, a rear cover buckling groove 16 which is retracted in a right angle is arranged on the outer wall of the lower end of the support 9, a spring plate clamping groove 18 is arranged on the lower plate surface which is connected with the support ring plate 17 in the lower end, a sound film bracket 19 is arranged in the upper end of the support 9, the rear cover 1, the vibrating voice coil 2, the washer sheet 3, the spring plate fixing sleeve 4, the vibrating spring plate 5, the cylindrical magnet sleeve 6, the annular magnet 7 and the T-shaped washer 8 assembly are integrally arranged at the lower end of the support 9, the vibrating spring plate 5 is arranged in the spring plate clamping groove 18, and the T-shaped washer 8 is arranged in the center hole 13 of the support ring plate 17, the upper cover opening of the rear cover 1 is connected to the rear cover buckling groove 16 in a buckling manner. And then a sounding voice coil 10 is arranged on the upper plate surface connected with the T-shaped washer 8, a vibrating sound film 11 is fixedly connected to the upper end of the sounding voice coil 10 in an adhesive manner, and the vibrating sound film 11 is arranged on a sound film bracket 19 arranged at the upper end of the support 9. And a circuit is arranged on the PCB lead plate 20 and is connected with the vibration voice coil 2, the sounding voice coil 10 and the audio circuit. The implementation of the coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration loudspeaker is completed.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (6)
1. The utility model provides a coaxial two voice coil loudspeaker voice coil two-way regulation formula low frequency vibration loudspeaker, includes back lid, vibration voice coil loudspeaker voice coil, china department piece, the fixed cover of shell fragment, vibration shell fragment, cylinder magnet cover, annular magnet, T type china department, support, sound production voice coil loudspeaker voice coil, vibration sound membrane, sound hole, centre bore, concentric arc piece strip, china department column cap, back lid catching groove, support collar plate, shell fragment draw-in groove, sound membrane bracket, PCB lead plate, tuning cotton, its characterized in that:
the coaxial double-voice-coil bidirectional-adjustment low-frequency vibration horn adopts the technical scheme that a sounding voice coil and a vibration voice coil are respectively and coaxially arranged on two sides of an annular magnet, the sounding voice coil, the annular magnet and the vibrating sound film are connected into a whole to realize sounding, and an independent horn sounding structure is formed by the cylindrical magnet sleeve, the annular magnet, the T-shaped washer, the sounding voice coil and the vibrating sound film, the vibration voice coil, the annular magnet and the vibration elastic sheet are combined to realize vibration, and an independent low-frequency vibration structure is formed by the vibration voice coil, the washer sheet, the elastic sheet fixing sleeve, the vibration elastic sheet, the cylindrical magnet sleeve, the annular magnet and the T-shaped washer, the vibration elastic sheet adopts the concentric arc-shaped elastic sheet strips integrally arranged on the stainless steel circular plate, thereby reducing the self weight, enhancing the vibration intensity and sensitivity, the sounding voice coil and the vibration voice coil are switched on and off by adopting a controller, and the volume and the vibration quantity of the low-frequency vibration loudspeaker are adjusted;
the rear cover is in a cylindrical cover shape, the rear cover plate is provided with sound holes in a flower shape or a geometric regular arrangement, the sound holes are covered with oval tuning cotton, the center inside the rear cover is fixedly bonded with a vibration voice coil, a washer sheet is arranged at the upper end of the vibration voice coil in a linking manner, the washer sheet is provided with a central hole, the periphery close to the central hole is in contact connection with the upper end of the vibration voice coil, a spring sheet fixing sleeve is arranged at the periphery of the washer sheet and is in a cylindrical tubular shape, the inner wall of the spring sheet fixing sleeve, which is linked with the washer sheet and the spring sheet fixing sleeve, is provided with a cylindrical magnet sleeve, the inner wall of the cylindrical magnet sleeve, which is linked with the washer sheet and the cylindrical magnet sleeve, is provided with an annular magnet, the annular magnet is provided with a central hole, the upper end of the spring sheet fixing sleeve is linked with a vibration spring sheet, and the vibration spring sheet is provided with a central hole and a concentric arc-shaped spring sheet strip, the diameter of the central hole is equal to the inner diameter of the elastic sheet fixing sleeve, a T-shaped washer is arranged on the upper opening of the elastic sheet fixing sleeve, the upper end of the annular magnet and the central hole cover of the vibration elastic sheet in a pressing mode, a washer column head is arranged on one side of the T-shaped washer and penetrates through the central hole formed in the annular magnet, the tail end of the washer column head is arranged in the central hole formed in the washer sheet and is close to the upper end of the vibration voice coil, a support is arranged on the upper end face of the T-shaped washer and the upper end face of the vibration elastic sheet in a connecting mode, the support is cylindrical, a support ring plate is radially arranged in the inner portion of the support ring plate and close to the middle of the support ring plate, the support ring plate is provided with sound holes which are circularly arranged in the central hole and the hole periphery, a rear cover buckling groove which is retracted at a right angle is formed in the outer wall of the lower end of the support ring plate, a sound film bracket is arranged in the inner portion of the upper end of the elastic sheet clamping groove in a clamping manner and is connected with the lower plate surface of the support ring plate, t type china department with the centre bore that the supporting ring board was equipped with links up, links up T type china department with the centre bore that the supporting ring board was equipped with the sound production voice coil loudspeaker voice coil, sound production voice coil loudspeaker voice coil upper end adhesive bonding is fixed integrative and is equipped with the vibration sound membrane, the vibration sound membrane is concentric circle center ripple curved surface structure, and is fixed to be set up in the sound membrane bracket, back lid catching groove with back lid lock joint is connected, the outer bottom surface of back lid is equipped with cover on the sound hole and is equipped with the tuning cotton, back lid outer bottom surface one side is close to the edge and is equipped with the PCB lead wire board, the PCB lead wire board be equipped with the circuit with sound production voice coil loudspeaker voice coil, vibration voice coil loudspeaker with controller turn-on connection constitutes a coaxial two-way regulation formula low frequency vibration loudspeaker.
2. The coaxial dual-voice coil bidirectional adjusting low-frequency vibration horn as claimed in claim 1, wherein the parts of the coaxial dual-voice coil bidirectional adjusting low-frequency vibration horn are fixed by gluing.
3. The coaxial dual-voice coil bi-directional adjustable low-frequency vibration horn as claimed in claim 1, wherein the bracket comprises an engineering plastic or metal material.
4. The coaxial dual voice coil bi-directional tuning low frequency vibration horn of claim 1, wherein the diameter of the sounding voice coil is larger than the vibration voice coil and the diameter.
5. The coaxial double-voice-coil bidirectional-adjustment type low-frequency vibration horn as claimed in claim 1, wherein the T-shaped washer is provided with a washer column head, the washer column head is cylindrical, the washer column head is axially and integrally arranged at the center of the washer plate, and the diameter of the washer plate is equal to or smaller than that of a central hole formed in the washer plate.
6. The coaxial dual-voice coil bi-directional adjusting type low-frequency vibration horn as claimed in claim 1, wherein the controller is provided with a main control IC, a volume switch adjusting knob, and a vibration switch adjusting knob, the volume switch adjusting knob is connected with the main control IC and the voice coil, the vibration switch adjusting knob is connected with the main control IC and the vibration voice coil, the main control IC is provided with pins 1-16, wherein the pins 1, 2 are input power, the pins 15, 16 are output power, the pins 1-9 are external management interface circuits including USB and memory card, the pin 10 is a microphone circuit, the pins 15, 16 are logically connected with the pin 10, the pins 11, 12 are respectively vibration and audio output circuits, an audio control module is connected with the pin, the audio control module is provided with an audio control IC3, and the audio control IC3 is logically connected with the pin 1, the audio control IC3 is provided with a circuit which is respectively connected with the volume switch adjusting button, the sounding voice coil and the vibration switch adjusting button and the vibration voice coil, the leg wire 13 is a reference voltage circuit, and the leg wire 14 is a vibration and audio output negative circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762261.XA CN112399316B (en) | 2019-08-19 | 2019-08-19 | Coaxial two-voice coil two-way regulation type low-frequency vibration horn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762261.XA CN112399316B (en) | 2019-08-19 | 2019-08-19 | Coaxial two-voice coil two-way regulation type low-frequency vibration horn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112399316A CN112399316A (en) | 2021-02-23 |
| CN112399316B true CN112399316B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762261.XA Active CN112399316B (en) | 2019-08-19 | 2019-08-19 | Coaxial two-voice coil two-way regulation type low-frequency vibration horn |
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| CN (1) | CN112399316B (en) |
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| KR20080003627A (en) * | 2006-07-03 | 2008-01-08 | 아이필유(주) | Multi-function micro speaker |
| CN201639749U (en) * | 2010-03-29 | 2010-11-17 | 广州市立伟电子有限公司 | Earphone with adjustable and controllable vibration effect |
| CN102137320A (en) * | 2011-04-13 | 2011-07-27 | 徐曙华 | Coaxial, two-way-transmission and multiple-quantity sounding loudspeaker |
| CN104581557A (en) * | 2013-10-28 | 2015-04-29 | 宁波升亚电子有限公司 | Point sound source module loudspeaker and manufacturing method thereof |
| CN104994458A (en) * | 2015-08-11 | 2015-10-21 | 余业祺 | Loudspeaker |
| CN107820169A (en) * | 2017-10-18 | 2018-03-20 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for improving loudspeaker sensitivity |
| CN207560327U (en) * | 2017-12-05 | 2018-06-29 | 惠州原韵电子有限公司 | A kind of loud speaker of 50mm diameters |
| CN208798193U (en) * | 2018-08-16 | 2019-04-26 | 广州市拓进数码科技有限公司 | Coaxial horn |
-
2019
- 2019-08-19 CN CN201910762261.XA patent/CN112399316B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080003627A (en) * | 2006-07-03 | 2008-01-08 | 아이필유(주) | Multi-function micro speaker |
| CN201639749U (en) * | 2010-03-29 | 2010-11-17 | 广州市立伟电子有限公司 | Earphone with adjustable and controllable vibration effect |
| CN102137320A (en) * | 2011-04-13 | 2011-07-27 | 徐曙华 | Coaxial, two-way-transmission and multiple-quantity sounding loudspeaker |
| CN104581557A (en) * | 2013-10-28 | 2015-04-29 | 宁波升亚电子有限公司 | Point sound source module loudspeaker and manufacturing method thereof |
| CN104994458A (en) * | 2015-08-11 | 2015-10-21 | 余业祺 | Loudspeaker |
| CN107820169A (en) * | 2017-10-18 | 2018-03-20 | 深圳精拓创新科技有限公司 | Loudspeaker and the method for improving loudspeaker sensitivity |
| CN207560327U (en) * | 2017-12-05 | 2018-06-29 | 惠州原韵电子有限公司 | A kind of loud speaker of 50mm diameters |
| CN208798193U (en) * | 2018-08-16 | 2019-04-26 | 广州市拓进数码科技有限公司 | Coaxial horn |
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|---|---|
| CN112399316A (en) | 2021-02-23 |
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