CN107820174A - A kind of vehicle-mounted loudspeaker magnetic structure - Google Patents
A kind of vehicle-mounted loudspeaker magnetic structure Download PDFInfo
- Publication number
- CN107820174A CN107820174A CN201711170750.3A CN201711170750A CN107820174A CN 107820174 A CN107820174 A CN 107820174A CN 201711170750 A CN201711170750 A CN 201711170750A CN 107820174 A CN107820174 A CN 107820174A
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- China
- Prior art keywords
- magnet
- magnetic
- shell
- magnetic conduction
- conduction boss
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Classifications
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The present invention relates to a kind of vehicle-mounted loudspeaker magnetic structure, including：Shell, top magnetic conductive board, the second magnet, the first magnet, middle part magnetic conduction boss, short-circuited conducting sleeve and screw.Shell is in bowl-shape, and the central axis of its bottom is provided with through hole.First magnet, the second magnet, top magnetic conductive board, short-circuited conducting sleeve are all circular.Middle part magnetic conduction boss is the boss with center shaft through-hole.Screw passes through the through hole of shell, and the stud of screw stands on the inside center of the shell.First magnet, middle part magnetic conduction boss, the second magnet and top magnetic conductive board are installed on the inside of shell successively from bottom to top.The boss of middle part magnetic conduction boss is set in the annulus of the second magnet, the upper end connection of central shaft through hole lower end and stud.Short-circuited conducting sleeve is Nian Jie with the boss top levels of middle part magnetic conduction boss.The present invention solves the problems, such as that loudspeaker weak heat-dissipating, leakage field are serious, the distortion factor is big by the optimization design on magnetic circuit, reaches lower low-frequency resonant frequency and Geng Gao sound pressure level.
Description
Technical field
The present invention relates to the magnetic structure of loudspeaker, more particularly to a kind of vehicle-mounted loudspeaker magnetic structure.
Background technology
With the fast development of China's economy, the height of national consumption level, the continuous popularization of private car, user is to vehicle-mounted sound
Ring and require also more and more higher.But because loudspeaker is as vehicular amusement apparatus, the electroacoustic knowledge being related to is extremely complex, car
Factory payes attention to loudspeaker not enough, causing vehicle-mounted loudspeaker always to be the cheap product of cost, audio dare not flatter.Loudspeaker master
It is that tone currents cutting magnetic line promotes oscillating component sounding to want principle, and magnetic circuit part design is most important, is loudspeaker
" engine ".From technical performance, several basic demands of woofer：Sensitivity, the distortion factor, resonant frequency,
These three parameters are all direct, depend indirectly on magnetic Circuit Design.It is double that Chinese patent CN 205670838 discloses a kind of symmetrical expression
Magnet loudspeaker, including magnetic circuit system, vibrational system and frame, magnetic circuit system and vibrational system are mounted on frame, magnetic circuit system
System includes T iron and is sheathed on upper magnet, washer and the lower magnet of T iron, and washer is between upper magnet and lower magnet.The knot
The defects of weak heat-dissipating, leakage field are serious, the distortion factor is big be present in structure.Therefore, there is improved space in magnetic circuit structure for loudspeaker.
The content of the invention
The goal of the invention of the present invention is to provide a kind of vehicle-mounted loudspeaker magnetic Circuit Design structure, is set by the optimization on magnetic circuit
Meter, solves the problems, such as that loudspeaker weak heat-dissipating, leakage field are serious, the distortion factor is big, reaches lower low-frequency resonant frequency and Geng Gao sound
Arbitrarily downgrade.
A kind of vehicle-mounted loudspeaker magnetic structure, including：Shell, top magnetic conductive board, the second magnet, the first magnet, middle part are led
Magnetic boss, short-circuited conducting sleeve and stud.The shell is in bowl-shape, and the central axis of its bottom is provided with through hole.First magnet,
Two magnet, top magnetic conductive board, short-circuited conducting sleeve are all circular.The middle part magnetic conduction boss is provided with center shaft through-hole.
First magnet and middle part magnetic conduction boss are installed on the inside of shell successively from bottom to top, and the stud is from shell
Through hole and the first magnet annulus in pass through, and be connected with the through hole of the middle part magnetic conduction boss, form the first magnetic of closing
Gap（8）.Short-circuited conducting sleeve is installed at the top of the middle part magnetic conduction boss；Second magnet is set in the middle part magnetic conduction boss
Outside, top magnetic conductive board is installed at the top of the second magnet；The lateral wall of the top magnetic conductive board and the inwall of the shell
It is brought into close contact, the madial wall of the shell, the lower wall of top magnetic conductive board, bottom and the second magnet, the middle part magnetic conduction boss of shell
The second magnetic gap of closing is formed with the lateral wall of the first magnet.
Further, the height after the short-circuited conducting sleeve installation is higher than the setting height(from bottom) of top magnetic conductive board.
Further, it is tapered on the inside of the top edge of middle part magnetic conduction boss center shaft through-hole.
Further, the lateral wall of the top magnetic conductive board madial wall and the short-circuited conducting sleeve keeps gap.
Further, the outer wall of the madial wall of second magnet and the middle part magnetic conduction boss keeps gap.
Further, the shell, top magnetic conductive board and middle part magnetic conduction boss use round steel material.
Further, the short-circuited conducting sleeve uses copper material.
Further, the stud heats disposable blackening process using alkalescence.
Further, the N poles of first magnet and the second magnet down, S poles upward.
The gain effect that the present invention is brought is：
1st, the double magnet arrangements used can increase magnetic field intensity in loudspeaker, increase magnetic flux, effectively improve loudspeaker
Efficiency and loudspeaker acoustic efficiency.
2nd, it can realize that the positive and negative periodic magnetic field intensity of electromagnetic signal is consistent using short-circuit ring structure.Secondly, formation is reverse
Electromotive force offset voice coil loudspeaker voice coil electromotive force, reduce the second harmonic distortion of loudspeaker, add system linearity degree.
3rd, magnetic conduction boss in middle part is boss structure, its top open conical opening can so that material is easier magnetic saturation, compared to
Traditional magnetic structure can go into stronger uniform magnetic field in magnetic gap, and be easier to radiate and go into closed chamber, lower
Low-frequency resonant, help to lift bass effect.
4th, the bowl-type of shell is designed to form flux path, antimagnetic leakage, and the more can be efficiently utilized compared to traditional magnetic circuit
Magnetic field caused by one magnet and the second magnet.
5th, the stud of outer casing bottom installation has better heat conduction and heat dispersion, after blackening process, Neng Gougeng
Add and significantly improve its thermal diffusivity.
Brief description of the drawings
Fig. 1 is the dismounting part drawing of the present invention；
Fig. 2 is the section of structure of the present invention；
Fig. 3 is frequency response curve figure corresponding to magnetic circuit of the present invention.
Embodiment
With reference to accompanying drawing to further instruction of the present invention.
Such as Fig. 1, a kind of vehicle-mounted loudspeaker magnetic structure, including：Shell 1, top magnetic conductive board 6, the second magnet 5, the first magnetic
Iron 3, middle part magnetic conduction boss 4, short-circuited conducting sleeve 7 and stud 2.
Shell 1 is in bowl-shape, and the central axis of its bottom is provided with through hole, and the structure of shell can form flux path, and can
Prevent magnetic from revealing.First magnet 3, the second magnet 5, top magnetic conductive board 6, short-circuited conducting sleeve 7 are all circular.Middle part magnetic conduction boss 4
Central shaft has through hole, and the top edge inner side of central shaft through hole is tapered, and this structure causes material to be easier magnetic saturation, compared to
Traditional magnetic structure, gone in magnetic gap into stronger uniform magnetic field.Secondly, it is easier to which into closed chamber, lower is low for radiating and row
Frequency resonance, help to lift bass effect.
As shown in Fig. 2 the first magnet 3 and middle part magnetic conduction boss 4 are installed on the inside of shell 1, stud 2 successively from bottom to top
Pass through in from the annulus of the through hole of shell and the first magnet 3, and be connected with the through hole of middle part magnetic conduction boss 4, form the of closing
One magnetic gap 8.The top of middle part magnetic conduction boss 4 is provided with short-circuited conducting sleeve 7.Second magnet 5 is set in the outer of middle part magnetic conduction boss 4
Portion, the top of the second magnet 5 are provided with top magnetic conductive board 6.The inwall of the lateral wall of top magnetic conductive board 6 and shell 1 is brought into close contact,
The madial wall of shell 1, the lower wall of top magnetic conductive board 6, bottom and the second magnet 5, middle part magnetic conduction boss 4 and the first magnetic of shell 1
The lateral wall of iron 3 forms the second magnetic gap 9 of closing.
The inwall of the lateral wall of top magnetic conductive board 6 and shell 1 is brought into close contact, and the lateral wall of its madial wall and short-circuited conducting sleeve 7 is protected
Gap is held, plays magnet accumulating cap, and with the row of short-circuited conducting sleeve 7 into a uniform magnetic field.The madial wall and middle part magnetic conduction of second magnet 5 are convex
The outer wall of platform 4 keeps gap, convenient bonding.The lateral wall of second magnet 5 keeps gap with the inwall of shell 1.Second magnet 5 exists
Uniform magnetic field is formed in the magnetic gap of top magnetic conductive board 6 and short-circuited conducting sleeve 7.The madial wall of first magnet 3 and the vertical outer wall of screw rod are protected
Hold gap.The lateral wall of first magnet 3 keeps gap with the inwall of shell 1.Magnetic field caused by first magnet 3 passes through middle part magnetic conduction
Boss 4, gone in the magnetic gap of top magnetic conductive board 6 and short-circuited conducting sleeve 7 into uniform magnetic field,
Further, the height after short-circuited conducting sleeve 7 is installed is higher than the setting height(from bottom) of top magnetic conductive board 6, and then realizes that electromagnetic signal is positive and negative
Periodic magnetic field intensity is consistent.Secondly, the reverse electromotive force of formation offsets voice coil loudspeaker voice coil electromotive force, reduces the second harmonic of loudspeaker
Distortion, add system linearity degree.
Shell 1, top magnetic conductive board 6 and middle part magnetic conduction boss 4 use round steel material, and short-circuited conducting sleeve 7 uses copper.
Stud 2 uses blackening process, increases its thermal diffusivity.
First magnet 3, the N poles of the second magnet 5 are under, and s poles are upper.
As shown in figure 3, the low-frequency resonant frequency of the loudspeaker designed according to the magnetic structure of the present invention is up to 40Hz, frequency response
Curve is more smooth, and distortion is smaller, and average sound pressure level is in 90dB or so, effect caused by equivalent to two conventional loudspeakers.
Claims (8)
1. a kind of vehicle-mounted loudspeaker magnetic structure, including：Shell（1）, top magnetic conductive board（6）, the second magnet（5）With the first magnet
（3）, it is characterised in that also include：Middle part magnetic conduction boss（4）, short-circuited conducting sleeve（7）And stud（2）；The shell（1）In bowl-shape, its
The central axis of bottom is provided with through hole；First magnet（3）, the second magnet（5）, top magnetic conductive board（6）, short-circuited conducting sleeve（7）
It is all circular；The middle part magnetic conduction boss（4）Provided with center shaft through-hole；
First magnet（3）With middle part magnetic conduction boss（4）It is installed on shell successively from bottom to top（1）Inside, the stud
（2）From the through hole and the first magnet of shell（3）Annulus in pass through, and with the middle part magnetic conduction boss（4）Through hole connection, shape
Into the first magnetic gap of closing（8）；The middle part magnetic conduction boss（4）Top short-circuited conducting sleeve is installed（7）；Second magnet
（5）It is set in the middle part magnetic conduction boss（4）Outside, the second magnet（5）Top top magnetic conductive board is installed（6）；It is described
Top magnetic conductive board（6）Lateral wall and the shell（1）Inwall be brought into close contact, the shell（1）Madial wall, top magnetic conduction
Plate（6）Lower wall, shell（1）Bottom and the second magnet（5）, middle part magnetic conduction boss（4）With the first magnet（3）Lateral wall shape
Into the second magnetic gap of closing（9）.
2. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The short-circuited conducting sleeve（7）After installation
Highly it is higher than top magnetic conductive board（6）Setting height(from bottom).
3. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The middle part magnetic conduction boss（4）In
It is tapered on the inside of the top edge of mandrel through hole.
4. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The top magnetic conductive board（6）Inner side
Wall and the short-circuited conducting sleeve（7）Lateral wall keep gap.
5. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：Second magnet（5）Inner side
Wall and the middle part magnetic conduction boss（4）Outer wall keep gap.
6. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The shell（1）, top magnetic conductive board
（6）With middle part magnetic conduction boss（4）Using round steel material
Vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The short-circuited conducting sleeve（7）Using copper material
Material.
7. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：The stud（2）Added using alkalescence
The disposable blackening process of temperature.
8. vehicle-mounted loudspeaker magnetic structure according to claim 1, it is characterised in that：First magnet（3）With second
Magnet（5）N poles down, S poles upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170750.3A CN107820174B (en) | 2017-11-22 | 2017-11-22 | Vehicle-mounted loudspeaker magnetic circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170750.3A CN107820174B (en) | 2017-11-22 | 2017-11-22 | Vehicle-mounted loudspeaker magnetic circuit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107820174A true CN107820174A (en) | 2018-03-20 |
| CN107820174B CN107820174B (en) | 2020-03-17 |
Family
ID=61610288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711170750.3A Active CN107820174B (en) | 2017-11-22 | 2017-11-22 | Vehicle-mounted loudspeaker magnetic circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107820174B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298622A (en) * | 1998-03-19 | 2001-06-06 | Jbl公司 | Shorting rings in dual-coil dual-gap loudspeaker drivers |
| CN2569479Y (en) * | 2002-09-03 | 2003-08-27 | 深圳市鸿瀚实业发展有限公司 | Closing magnetic path structure of speaker |
| WO2006043764A1 (en) * | 2004-10-18 | 2006-04-27 | Seong Bae Kim | Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same |
| CN102387450A (en) * | 2010-08-31 | 2012-03-21 | 张凡 | Dual-magnetic-gap dual-coil external-magnetic transducer and preparation method thereof |
| CN205726355U (en) * | 2016-04-19 | 2016-11-23 | 歌尔丹拿音响有限公司 | Magnetic circuit system and speaker |
-
2017
- 2017-11-22 CN CN201711170750.3A patent/CN107820174B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298622A (en) * | 1998-03-19 | 2001-06-06 | Jbl公司 | Shorting rings in dual-coil dual-gap loudspeaker drivers |
| CN2569479Y (en) * | 2002-09-03 | 2003-08-27 | 深圳市鸿瀚实业发展有限公司 | Closing magnetic path structure of speaker |
| WO2006043764A1 (en) * | 2004-10-18 | 2006-04-27 | Seong Bae Kim | Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same |
| CN102387450A (en) * | 2010-08-31 | 2012-03-21 | 张凡 | Dual-magnetic-gap dual-coil external-magnetic transducer and preparation method thereof |
| CN205726355U (en) * | 2016-04-19 | 2016-11-23 | 歌尔丹拿音响有限公司 | Magnetic circuit system and speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107820174B (en) | 2020-03-17 |
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