CN106375927B - A kind of manufacture craft of loudspeaker - Google Patents
A kind of manufacture craft of loudspeaker Download PDFInfo
- Publication number
- CN106375927B CN106375927B CN201611066368.3A CN201611066368A CN106375927B CN 106375927 B CN106375927 B CN 106375927B CN 201611066368 A CN201611066368 A CN 201611066368A CN 106375927 B CN106375927 B CN 106375927B
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- wave
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- upper mold
- coil framework
- pot body
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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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Toys (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The present invention relates to loudspeaker technical field of manufacturing process more particularly to a kind of manufacture craft of loudspeaker, production first plays wave and speech coil framework, plays wave and speech coil framework is integrally formed；Bulging paper is made again；Bullet wave and speech coil framework by drum paper and after being integrally formed are combined, and the present invention can will play wave, drum paper, speech coil framework three is arranged concentrically, and will not fall off so that manufactured tone quality of horn more preferably, service life it is more long.
Description
Technical field
The present invention relates to loudspeaker technical field of manufacturing process more particularly to a kind of manufacture crafts of loudspeaker.
Background technique
Playing wave, drum paper, speech coil framework is the main sound-generating element in loudspeaker, and the sound quality quality and drum paper of loudspeaker have very high point
System, in addition to being capable of providing loudspeaker and the preferable output power of loudspeaker and acoustic characteristic and loudspeaker and loudspeaker producer exist
The basis of quality control when manufacturing loudspeaker and loudspeaker, additionally it is possible to effectively extend the service life of loudspeaker and loudspeaker.
The manufacture craft of conventional horn be wave will be played by glue, drum paper, speech coil framework are bonded together, but of long duration
Afterwards, it is easy to fall off, causes loudspeaker can not normal use；In addition, artificial bonding is easy to happen offset, wave, drum paper, speech coil framework are played
Three cannot be guaranteed to be arranged concentrically, and seriously affect the sound quality of loudspeaker.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art providing a kind of manufacture craft of loudspeaker, the present invention can be incited somebody to action
Play wave, drum paper, speech coil framework three is arranged concentrically, and will not fall off so that manufactured tone quality of horn is more preferable, service life more
Long.
The present invention is achieved through the following technical solutions, a kind of manufacture craft of loudspeaker, including the following steps:
Step 1: production plays wave and speech coil framework first, plays wave and speech coil framework is integrally formed；Step 2: drum paper is made；Step 3:
Bullet wave after rousing paper and being integrally formed and speech coil framework are combined.
Preferably, the step 1 specifically includes following steps: substrate A is placed in and is used to play wave and sound by A.
The upper end lower die A of the integrally formed molding die of ring framework, straight line driving mechanism drives upper mold A to push towards the direction lower die A, to base
Material A progress is hot-forming, and the boss A of upper mold A is protruded into the hollow circuit cylinder A of lower die A, so that the middle part of substrate A is downwardly convex, shape
At speech coil framework；B. the wave forming surface B of the wave forming surface A and upper mold A of lower die A simultaneously carry out the tow sides of substrate A
Hot pressing forms so that the tow sides of substrate A form ripple glaze end face and plays wave.
Preferably, the step 2 specifically includes following steps: substrate B is placed the upper end lower die B by A., is passed through
Straight line driving mechanism drives upper mold B to push towards the direction lower die B, and the pot body molding convex surface A of upper mold B pushes the middle part of substrate B, makes
The middle part for obtaining substrate B is downwardly convex in pot shape, and is attached at the surface of the pot body molding concave surface A of lower die B, forms the pot of drum paper
Body；B. while the pot body molding concave surface A cooperation of the pot body molding convex surface A and lower die B of upper mold B, the outstanding edge forming of lower die B is convex
Face A will be pressed on the substrate B at pot body excircle, so that this part thereof B raises upward, and be attached at the outstanding edge forming of upper mold B
The surface of concave surface A forms the outstanding side of drum paper.
Preferably, hot pressing temperature needed for the pot body molding is 160 DEG C ~ 200 DEG C；Time is 6s ~ 10s, described outstanding
Hot pressing temperature needed for edge forming is 170 DEG C ~ 210 DEG C；Time is 6s ~ 10s.
Preferably, further including step 4: playing plain conductor of the welding for connecting with loudspeaker at wave.
Preferably, bullet wave of the A. in substrate A opens up aperture, the aperture of aperture and metal close to the position of speech coil framework
The diameter of conducting wire is equal；B. plain conductor is passed through into aperture, so that plain conductor is located at the lower surface for playing wave；C. pass through weldering pressure work
Skill, so that plain conductor closely attaches the lower surface with bullet wave.
Preferably, further including step 5: voice coil is made in the wound around coil on speech coil framework.
A kind of manufacture craft of loudspeaker, including the following steps: step 1: drum paper and speech coil framework, drum are made first
Paper and speech coil framework are integrally formed；Step 2: production plays wave；Step 3: by drum paper and voice coil bone after playing wave and being integrally formed
Frame is combined.
Preferably, the step 1 specifically includes following steps: substrate C will be placed in and is used to rouse paper by a.
On the lower die C of pot body and the integrally formed combination die group of speech coil framework, driving mechanism drives the upper mold C of combination die group towards lower die C
Direction push, hot-forming to substrate C, the boss B of lower die C is protruded into the hollow circuit cylinder B of upper mold C so that the middle part of substrate C to
Upper protrusion forms speech coil framework；B. the substrate C of speech coil framework outer circumference is pressed downward by the pot body molding convex surface B of upper mold C,
With the pot body molding concave surface B cooperation of lower die C, the pot body of drum paper is formed, semi-finished product are obtained；C. step b semi-finished product are obtained again to move to
The processing mould group that side is hanged for making bulging paper, semi-finished product are placed on processing mould group lower die D；D. driving mechanism drives again adds
The upper mold D of work mould group is pushed, the outstanding edge forming concave surface B cooperation of the outstanding edge forming convex surface B and lower die D of upper mold D, to the pot of semi-finished product
The outer circumference hot pressing of body forms the outstanding side of drum paper.
Preferably, 170 DEG C ~ 200 DEG C of the hot pressing temperature of the pot body of the bulging paper, the time is 7s ~ 10s；The voice coil bone
210 DEG C ~ 240 DEG C of the hot pressing temperature of frame, time are 7s ~ 10s；180 DEG C ~ 210 DEG C of the hot pressing temperature on the outstanding side of the bulging paper, time
For 7s ~ 10s.
Beneficial effects of the present invention: production plays wave and speech coil framework first, plays wave and speech coil framework is integrally formed；It makes again
Drum paper；Bullet wave after rousing paper and being integrally formed and speech coil framework are combined, the present invention can will play wave, drum paper, voice coil
Skeleton three is arranged concentrically, and will not fall off, so that manufactured tone quality of horn is more preferable, service life is more long.
Detailed description of the invention
Fig. 1 is the schematic perspective view that the embodiment of the present invention one plays wave and speech coil framework integrated mould.
Fig. 2 is the top view that the embodiment of the present invention one plays wave and speech coil framework integrated mould lower die A.
Fig. 3 is the top view that the embodiment of the present invention one plays wave and speech coil framework integrated mould upper mold A.
Fig. 4 is the top view that the embodiment of the present invention one plays wave and speech coil framework integrated mould upper mold A.
Fig. 5 is that the embodiment of the present invention one plays wave and the integrally formed structural schematic diagram of speech coil framework.
Fig. 6 is the schematic perspective view of the drum of the embodiment of the present invention one paper molding die upper mold B.
Fig. 7 is the schematic perspective view of the drum of the embodiment of the present invention one paper molding die lower die B.
Fig. 8 is the schematic perspective view of two combination die group of the embodiment of the present invention.
Fig. 9 is the top view of two combination die group lower die C of the embodiment of the present invention.
Figure 10 is the top view of two combination die group upper mold C of the embodiment of the present invention.
Figure 11 is the schematic perspective view of two processing mould group of the embodiment of the present invention.
Figure 12 is the top view of two processing mould group lower die D of the embodiment of the present invention.
Figure 13 is the top view of two processing mould group upper mold D of the embodiment of the present invention.
Figure 14 is the structural schematic diagram of present invention drum paper and speech coil framework.
Specific embodiment
With reference to the accompanying drawing 1 to Figure 14 and specific embodiment the present invention is described further.
Embodiment one.
As shown in Figures 1 to 4, a kind of manufacture craft of loudspeaker, including the following steps: step 1: production bullet first
Wave 1 and speech coil framework 2, play wave 1 and speech coil framework 2 is integrally formed；Step 2: drum paper 3 is made；Step 3: by drum paper 3 and one
Bullet wave 1 and speech coil framework 2 after molding are combined.
Present embodiment will play wave 1 first and speech coil framework 2 is designed to be integrally formed, and guarantees to play wave 1 and speech coil framework 2 is same
Heart setting, then makes bulging paper 3, and when combination, speech coil framework 2 is passed through from the through-hole at 3 middle part of drum paper, is guaranteed drum paper 3, is played wave 1 and sound
Ring framework 2 is arranged concentrically, so that manufactured tone quality of horn is more preferable, service life is more long.
Specifically, substrate A to be placed in the lower die A41 for being used to play wave 1 and the integrally formed molding die of speech coil framework 2
End, straight line driving mechanism drive upper mold A42 to push towards the direction lower die A41, and upper mold A42 is provided with for hot-forming heating dress
A is set, hot-forming to substrate A progress, the boss A421 of upper mold A42 is protruded into the hollow circuit cylinder A411 of lower die A41, so that substrate
The middle part of A is downwardly convex, forms speech coil framework 2；B. the wave forming surface of the wave forming surface A412 and upper mold A42 of lower die A41
B422 carries out hot pressing to the tow sides of substrate A simultaneously, so that the tow sides of substrate A form ripple glaze end face, is formed and plays wave
1。
Wherein, upper mold A42 further includes upper disk 425 and lower disc 426, and the wave forming surface B422 and boss A421 are equal
It is set to the upper end of disk 425, several are provided between the upper disk 425 and lower disc 426 for driving disk
425 guide posts 427 to move along a straight line back and forth towards 426 direction of lower disc, several described guide posts 427 are provided with spring 428,
One end of the spring 428 is abutted with upper disk 425, and the other end of the spring 428 is abutted with lower disc 426.
When making drum paper 3, in order to guarantee that the pot body 31 for rousing paper 3 and outstanding side 32 are arranged concentrically, substrate B is placed in and is used for into
The upper end lower die B51 of the molding die of type drum paper 3, drives upper mold B52 to push towards the direction lower die B51 by straight line driving mechanism,
Upper mold B52 is equipped with the heating device B for hot pressing, and the pot body molding convex surface A521 of upper mold B52 pushes the middle part of substrate B, makes
The middle part for obtaining substrate B is downwardly convex in pot shape, and is attached at the surface of the pot body molding concave surface A511 of lower die B51, forms drum paper 3
Pot body 31；While the pot body molding concave surface A512 cooperation of the pot body molding convex surface A522 and lower die B51 of upper mold B52, lower die
The outstanding edge forming convex surface A513 of B51 will be pressed on the substrate B at 31 excircle of pot body, so that this part thereof B raises upward, and be pasted
The surface of the outstanding edge forming concave surface A523 of upper mold B52 is invested, the outstanding side 32 of drum paper 3 is formed.
In the present embodiment, it is 160 DEG C ~ 200 DEG C that the pot body 31, which forms required hot pressing temperature,；Time is 6s ~ 10s, institute
Stating outstanding side 32 and forming required hot pressing temperature is 170 DEG C ~ 210 DEG C；Time is 6s ~ 10s.
In the present embodiment, plain conductor 8 of the welding for connecting with loudspeaker at wave 1 is being played.
Wherein, aperture, the aperture of aperture and plain conductor 8 are opened up close to the position of speech coil framework 2 in the bullet wave 1 of substrate A
Diameter it is equal；Plain conductor 8 is passed through into aperture again, so that plain conductor 8 is located at the lower surface for playing wave 1；It is pressed finally by weldering
Plain conductor 8 is attached the mesh with the lower surface for playing wave 1 so that plain conductor 8 closely attaches the lower surface with bullet wave 1 by technique
Be to prevent plain conductor 8 from being interfered, being damaged.
In the present embodiment, voice coil is made in the wound around coil on speech coil framework 2.
Implement two.
This implementation and the difference of embodiment one are: the present embodiment will make drum paper 3 and speech coil framework 2, drum 3 He of paper first
Speech coil framework 2 is integrally formed；Step 2: production plays wave 1；Step 3: by drum paper 3 and voice coil bone after playing wave 1 and being integrally formed
Frame 2 is combined.
Drum paper 3 and speech coil framework 2 are designed to be integrally formed by the present embodiment first, guarantee that drum paper 3 and speech coil framework 2 are concentric
Setting, then make and play wave 1, when combination, speech coil framework 2 is passed through from the through-hole for playing 1 middle part of wave, is guaranteed drum paper 3, is played wave 1 and voice coil
Skeleton 2 is arranged concentrically, so that manufactured tone quality of horn is more preferable, service life is more long.
Specifically, substrate C to be placed in the pot body 31 and the integrally formed combination die of speech coil framework 2 for being used to rouse paper 3 first
On the lower die C61 of group, driving mechanism drives the upper mold C62 of combination die group to push towards the direction lower die C61, and upper mold C62 has for heat
The heating device C of pressure, hot-forming to substrate C, the boss B611 of lower die C61 is protruded into the hollow circuit cylinder B621 of upper mold C62, is made
It obtains and raises upward in the middle part of substrate C, form speech coil framework 2；Then the pot body of upper mold C62 forms convex surface B622 for speech coil framework 2
The substrate C of outer circumference is pressed downward, and the pot body molding concave surface B612 cooperation with lower die C61 forms the pot body 31 of drum paper 3, obtains
Semi-finished product；Step b is obtained into semi-finished product again and moves to the processing mould group for being used to make bulging paper and hanging side, semi-finished product are placed on processing mould
On group lower die D71；Driving mechanism drives the upper mold D72 of processing mould group to push again, and upper mold D72 is equipped with the heating device for hot pressing
The outstanding edge forming concave surface B713 of the outstanding edge forming convex surface B723 and lower die D71 of D, upper mold D72 cooperates, to the pot bodys 31 of semi-finished product
Outer circumference hot pressing forms the outstanding side 32 of drum paper 3.
In the present embodiment, 180 DEG C of hot pressing temperature of the pot body 31 of the bulging paper 3, time 8.5s；The speech coil framework 2
225 DEG C of hot pressing temperature, time 8.5s；190 DEG C of the hot pressing temperature on the outstanding side 32 of the bulging paper 3, time 8.5s.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (8)
1. a kind of manufacture craft of loudspeaker, it is characterised in that: including the following steps:
Step 1: production plays wave (1) and speech coil framework (2) first, plays wave (1) and speech coil framework (2) is integrally formed；
Step 2: drum paper (3) is made；
Step 3: the bullet wave (1) after rousing paper (3) and being integrally formed and speech coil framework (2) are combined；
The step 1 specifically includes following steps:
A., substrate A is placed in lower die A (41) upper end for being used to play wave (1) and speech coil framework (2) integrally formed molding die,
Straight line driving mechanism drives upper mold A (42) to push towards (41) direction lower die A, hot-forming to substrate A progress, upper mold A's (42)
Boss A (421) is protruded into the hollow circuit cylinder A (411) of lower die A (41), so that the middle part of substrate A is downwardly convex, forms voice coil bone
Frame (2)；
B. the wave forming surface B (422) of the wave forming surface A (412) and upper mold A (42) of lower die A (41) simultaneously to substrate A just
Anti- two sides carries out hot pressing, so that the tow sides of substrate A form ripple glaze end face, is formed and plays wave (1).
2. a kind of manufacture craft of loudspeaker according to claim 1, it is characterised in that: the step 2 specifically includes following
Several steps:
Substrate B is placed in lower die B (51) upper end for being used for the molding die of assembly drum paper (3), is driven by straight line driving mechanism
Dynamic upper mold B (52) are pushed towards (51) direction lower die B, and pot body molding convex surface A (521) of upper mold B (52) is under the middle part of substrate B
Pressure, so that the middle part of substrate B is downwardly convex in pot shape, and is attached at the surface of pot body molding concave surface A (511) of lower die B (51),
Form the pot body (31) of drum paper (3)；
While pot body molding concave surface A (512) cooperation of pot body molding convex surface A (521) and lower die B (51) of upper mold B (52), under
The outstanding edge forming convex surface A (513) of mould B (51) will be pressed on the substrate B at pot body (31) excircle, so that this part thereof B is upward
Protrusion, and it is attached at the surface of the outstanding edge forming concave surface A (523) of upper mold B (52), form the outstanding side (32) of drum paper (3).
3. a kind of manufacture craft of loudspeaker according to claim 2, it is characterised in that: needed for pot body (31) molding
Hot pressing temperature is 160 DEG C~200 DEG C；Time is 6s~10s, hot pressing temperature needed for outstanding side (32) molding is 170 DEG C~
210℃；Time is 6s~10s.
4. a kind of manufacture craft of loudspeaker according to claim 1, it is characterised in that: further include step 4: playing wave (1)
Plain conductor (8) of place's welding for being connect with loudspeaker.
5. a kind of manufacture craft of loudspeaker according to claim 4, it is characterised in that: the step 4 specifically includes following
Several steps: bullet wave (1) of the A. in substrate A opens up aperture, the aperture of aperture and plain conductor close to the position of speech coil framework (2)
Diameter it is equal；
B. plain conductor is passed through into aperture, so that plain conductor is located at the lower surface for playing wave (1)；
C. by weldering pressure technique, so that plain conductor closely attaches the lower surface with bullet wave (1).
6. a kind of manufacture craft of loudspeaker according to claim 1, it is characterised in that: further include step 5: in voice coil bone
Wound around coil on frame (2), is made voice coil.
7. a kind of manufacture craft of loudspeaker, it is characterised in that: including the following steps:
Step 1: making drum paper (3) and speech coil framework (2) first, and drum paper (3) and speech coil framework (2) are integrally formed；
Step 2: production plays wave (1)；
Step 3: the drum paper (3) after playing wave (1) and being integrally formed and speech coil framework (2) are combined；
A., substrate C is placed in the lower die of the pot body (31) Yu speech coil framework (2) integrally formed combination die group that are used to rouse paper (3)
On C (61), driving mechanism drives the upper mold C (62) of combination die group to push towards (61) direction lower die C, hot-forming to substrate C, under
The boss B (611) of mould C (61) is protruded into the hollow circuit cylinder B (621) of upper mold C (62), so that raise upward in the middle part of substrate C, shape
At speech coil framework (2)；
B. the substrate C of speech coil framework (2) outer circumference is pressed downward by pot body molding convex surface B (622) of upper mold C (62), under
Pot body molding concave surface B (612) cooperation of mould C (61), forms the pot body (31) of drum paper (3), obtains semi-finished product；
C. step b is obtained into semi-finished product again and moves to the processing mould group for being used to make bulging paper and hanging side, semi-finished product are placed on processing mould
In group lower die D (71)；
D. driving mechanism drives the upper mold D (72) of processing mould group to push again, and the outstanding edge forming convex surface B (723) of upper mold D (72) is under
The outstanding edge forming concave surface B (713) of mould D (71) cooperates, the outer circumference hot pressing to the pot body (31) of semi-finished product, forms drum paper
(3) outstanding side (32).
8. a kind of manufacture craft of loudspeaker according to claim 7, it is characterised in that: the pot body (31) of the bulging paper (3)
170 DEG C~200 DEG C of hot pressing temperature, the time be 7s~10s；210 DEG C~240 DEG C of the hot pressing temperature of the speech coil framework (2), when
Between be 7s~10s；180 DEG C~210 DEG C of the hot pressing temperature on the outstanding side (32) of the bulging paper (3), time are 7s~10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066368.3A CN106375927B (en) | 2016-11-28 | 2016-11-28 | A kind of manufacture craft of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611066368.3A CN106375927B (en) | 2016-11-28 | 2016-11-28 | A kind of manufacture craft of loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106375927A CN106375927A (en) | 2017-02-01 |
| CN106375927B true CN106375927B (en) | 2019-03-26 |
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ID=57891633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611066368.3A Active CN106375927B (en) | 2016-11-28 | 2016-11-28 | A kind of manufacture craft of loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN106375927B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110691316B (en) * | 2019-10-24 | 2020-09-22 | 广州世韵电子科技有限公司 | Manufacturing method of loudspeaker |
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| CN2595118Y (en) * | 2002-11-04 | 2003-12-24 | 张景会 | Horn-type total audio frequency coaxial loudspeaker |
| CN201585119U (en) * | 2009-12-16 | 2010-09-15 | 深圳利能达实业有限公司 | Loudspeaker |
| CN202998458U (en) * | 2012-11-29 | 2013-06-12 | 天津洪波电子集团有限公司 | Moving-coil loudspeaker |
| CN103152689A (en) * | 2013-02-04 | 2013-06-12 | 东星电声科技(东莞)有限公司 | Horn basin frame for improving voice coil concentricity and manufacture method for horn |
| CN103200499A (en) * | 2013-03-29 | 2013-07-10 | 天津市隆耀成机电设备有限公司 | Conical paper cone without center hole and loudspeaker with conical paper cone |
| CN203387677U (en) * | 2013-08-14 | 2014-01-08 | 美特科技(苏州)有限公司 | Loudspeaker |
| CN203761582U (en) * | 2014-03-19 | 2014-08-06 | 美特科技(苏州)有限公司 | Loudspeaker vibration system and loudspeaker |
| CN204948335U (en) * | 2015-07-31 | 2016-01-06 | 钱明华 | Diaphragm of loudspeaker supporting construction |
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2016
- 2016-11-28 CN CN201611066368.3A patent/CN106375927B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2595118Y (en) * | 2002-11-04 | 2003-12-24 | 张景会 | Horn-type total audio frequency coaxial loudspeaker |
| CN201585119U (en) * | 2009-12-16 | 2010-09-15 | 深圳利能达实业有限公司 | Loudspeaker |
| CN202998458U (en) * | 2012-11-29 | 2013-06-12 | 天津洪波电子集团有限公司 | Moving-coil loudspeaker |
| CN103152689A (en) * | 2013-02-04 | 2013-06-12 | 东星电声科技(东莞)有限公司 | Horn basin frame for improving voice coil concentricity and manufacture method for horn |
| CN103200499A (en) * | 2013-03-29 | 2013-07-10 | 天津市隆耀成机电设备有限公司 | Conical paper cone without center hole and loudspeaker with conical paper cone |
| CN203387677U (en) * | 2013-08-14 | 2014-01-08 | 美特科技(苏州)有限公司 | Loudspeaker |
| CN203761582U (en) * | 2014-03-19 | 2014-08-06 | 美特科技(苏州)有限公司 | Loudspeaker vibration system and loudspeaker |
| CN204948335U (en) * | 2015-07-31 | 2016-01-06 | 钱明华 | Diaphragm of loudspeaker supporting construction |
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| Publication number | Publication date |
|---|---|
| CN106375927A (en) | 2017-02-01 |
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