CN105142083B - Loud speaker - Google Patents
Loud speaker Download PDFInfo
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- CN105142083B CN105142083B CN201510613122.2A CN201510613122A CN105142083B CN 105142083 B CN105142083 B CN 105142083B CN 201510613122 A CN201510613122 A CN 201510613122A CN 105142083 B CN105142083 B CN 105142083B
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- magnetic conductive
- voice coil
- core column
- conductive core
- orientation cylinder
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Abstract
The invention discloses a kind of loud speakers, it includes frame, cone, the first magnetic conductive board, the second magnetic conductive board, drive magnet, magnetic conductive core column, voice coil and voice coil orientation cylinder, one end of magnetic conductive core column is fixed with the first magnetic conductive board, the other end of magnetic conductive core column is inserted into the central through hole of voice coil orientation cylinder, it is characterised in that：Multiple thermally conductive sheets are equipped in magnetic conductive core column, the upper end of first magnetic conductive board is equipped with heat-radiating substrate, heat-radiating substrate is equipped with several radiating fins, thermally conductive sheet sequentially runs through magnetic conductive core column and the first magnetic conductive board, and fixed with heat-radiating substrate, the lubricating structure of frictional force between the lateral wall for reducing magnetic conductive core column and voice coil orientation cylinder (8) madial wall is equipped between the magnetic conductive core column and voice coil orientation cylinder.The present invention provides a kind of loud speaker, and the thermal energy of the generation that rubs in voice coil vibrations voiced process is few, good heat dissipation effect, to improve the time of loud speaker continuous work and the service life of loud speaker.
Description
Technical field
The present invention relates to the technical field of electro-acoustic transducer device, a kind of specifically loud speaker.
Background technology
Coil-moving speaker is also known as dynamic speaker.Its operation principle is to work as current－carrying conductor according to Faraday's law
When passing through magnetic field, it can be met by an electric power, direction and not carry out bright left hand rule, power is hung down mutually with electric current, magnetic direction
Directly, stress size is directly proportional to electric current, conductor length, magnetic flux density.When voice coil input alternation tone currents, voice coil is by one
A alternation motive force generates alternate motion, drives cone vibration, pushes air repeatedly and sounding.
It can be seen that during speaker operation, voice coil is therefore the rubbing between voice coil and air in oscillation exchange
It wipes and the friction between voice coil and drive magnet will produce certain heat, if the heat of above-mentioned generation cannot be arranged in time
Go out, it will so that drive magnet is generated hot demagnetization effects, eventually lead to the magnetic property reduction of drive magnet or complete demagnetization.Especially exist
In powerful loud speaker, the amplitude and vibration frequency of voice coil are higher, therefore the rate of its generation thermal energy is much big
In the rate of loud speaker heat dissipation, this also just constrains the time of the continuous work of supersound projector, and operating personnel are for making
Above-mentioned existing supersound projector is used with long-continued the considerations of requirement, it will the magnetic property of drive magnet is caused to decline
Subtract, thereby reduces the service life of loud speaker.This namely in the prior art supersound projector after long-term continuous use
Where the problem of being easily damaged.
Invention content
The technical problem to be solved by the present invention is to：A kind of loud speaker is provided, rub production in voice coil vibrations voiced process
Raw thermal energy is few, good heat dissipation effect, to improve the time of loud speaker continuous work and the service life of loud speaker.
The technical solution used in the present invention is：A kind of loud speaker is provided, it includes frame, cone, the first magnetic conductive board,
Two magnetic conductive boards, drive magnet, magnetic conductive core column, voice coil and voice coil orientation cylinder, the drive magnet be clamped in the first magnetic conductive board and
Between second magnetic conductive board, the osculum end of the second magnetic conductive board and frame is fixed, and voice coil is wound in outside voice coil orientation cylinder, and is led with voice coil
It is placed in the centre bore of drive magnet to cylinder, one end of voice coil orientation cylinder and one end of cone are fixed, and cone is set up in frame
On, and the outer rim of the other end of cone and the big opening end of frame are fixed, one end of magnetic conductive core column is fixed with the first magnetic conductive board, magnetic conduction
The other end of stem is inserted into the central through hole of voice coil orientation cylinder, and magnetic conductive core column is slidably matched with voice coil orientation cylinder, magnetic conductive core column
Interior to be equipped with multiple thermally conductive sheets, the upper end of the first magnetic conductive board is equipped with heat-radiating substrate, and heat-radiating substrate is equipped with several radiating fins, heat conduction
Piece sequentially runs through magnetic conductive core column and the first magnetic conductive board, and is fixed with heat-radiating substrate, between the magnetic conductive core column and voice coil orientation cylinder
Lubricating structure equipped with frictional force between the lateral wall for reducing magnetic conductive core column and voice coil orientation medial wall of the tube.Pass through lubricating machine
Structure can effectively reduce the friction between voice coil orientation cylinder and magnetic conductive core column, to reduce the generation of heat, reach extension and drive
The purpose of moving magnet service life.And it can quickly will be in magnetic conductive core column by thermally conductive sheet, heat-radiating substrate and radiating fin
Thermal energy disperses, and further slows down influence of the high temperature for magnetic conductive core column's magnetic property.It can be made in magnetic conductive core column by thermally conductive sheet
The heat of generation is quickly dispersed, and avoids causing magnetic conductive core column by pyromagnetic decaying since temperature is excessively high.
The lubricating structure includes inner annular plate and the annular outer plate that is placed on outside inner annular plate, inner annular plate and magnetic conductive core column
Tight fit, annular outer plate and voice coil orientation cylinder tight fit, between the inner annular plate upper end and the upper end of annular outer plate, Yi Jihuan
It is connected respectively by an elastic membrane between shape inner panel lower end and the lower end of annular outer plate, and inner annular plate, annular outer plate and elasticity
Film surrounds the annular cavity to form a sealing, and lubricating fluid is enclosed in annular cavity.While reaching preferable lubricant effect also
It can prevent lubricating fluid from revealing well, and can prevent dust from entering between voice coil orientation cylinder and magnetic conductive core column well.Pass through profit
The friction that sliding mechanism can be reduced effectively between voice coil orientation cylinder and magnetic conductive core column reaches and prolongs to reduce the generation of heat
The purpose of long drive magnet service life.
The inner annular plate, annular outer plate and elastic membrane are that same rubber material is made.It is made up of rubber material,
It can be conducive to the tight fit installation of inner annular plate and annular outer plate.It can be packed by squeezing.To reduce for ring
The dimension precision requirement of shape inner panel and annular outer plate, reduces processing cost.
It is each provided on the lateral wall of the magnetic conductive core column and anti-slop serrations on the madial wall of voice coil orientation cylinder.Lubricating fluid
High pressure drives inner annular plate and annular outer plate to be pressed on corresponding side wall, and can be very good to prevent ring by anti-slop serrations
Shape inner panel and the opposite sliding of the side wall of magnetic conductive core column, annular outer plate sliding opposite with the side wall of voice coil orientation cylinder.
The inner annular plate, annular outer plate and elastic membrane are an integral structure.
The elastic membrane is equipped with the valve cock for injecting or being discharged lubricating fluid.
After using the above structure, a kind of loud speaker of the invention has the following advantages compared with prior art：First, pass through
The cooling effect of thermally conductive sheet, heat-radiating substrate and radiating fin can reduce the heat of friction generation for each magnetism in loud speaker
Secondly the influence of component by the lubricating action of annular cavity and lubricating fluid, can make the friction between voice coil and drive magnet
Power is small, therefore can effectively reduce the heat that friction generates, to avoid heat for magnetic conductive core column and drive magnet
Magnetic property, which generates demagnetization, to be influenced, and finally, lubricating fluid is sealing into closed annular cavity, there is no need to add lubricating fluid, with
And it avoids lubricating fluid from falling on cone the case where polluting cone and occurs.
Description of the drawings
Fig. 1 is the structural schematic diagram of the loud speaker of the present invention.
Fig. 2 is the close-up schematic view in region " A " in Fig. 1.
Wherein, 1, frame, 1.1, osculum end, 1.2, big opening end, 2, cone, the 3, first magnetic conductive board, the 4, second magnetic conductive board, 5,
Drive magnet, 5.1, centre bore, 6, magnetic conductive core column, 7, voice coil, 8, voice coil orientation cylinder, 8.1, central through hole, 9, inner annular plate,
10, annular outer plate, 11, elastic membrane, 12, anti-slop serrations, 13, valve cock, 14, thermally conductive sheet, 15, heat-radiating substrate, 16, radiating fin,
17, annular cavity.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
The present invention provides a kind of loud speaker, it includes frame 1, cone 2, the first magnetic conductive board 3, the second magnetic conductive board 4, driving
Magnet 5, magnetic conductive core column 6, voice coil 7 and voice coil orientation cylinder 8, the drive magnet 5 are clamped in the first magnetic conductive board 3 and the second magnetic conduction
Between plate 4, the second magnetic conductive board 4 and the osculum end 1.1 of frame 1 are fixed, and voice coil 7 is wound in outside voice coil orientation cylinder 8, and is led with voice coil
It is placed in the centre bore 5.1 of drive magnet 5 to cylinder 8, one end and one end of cone 2 of voice coil orientation cylinder 8 are fixed, 2 frame of cone
In frame 1, and the outer rim of the other end of cone 2 and the big opening end 1.2 of frame 1 are fixed, one end of magnetic conductive core column 6 and first
Magnetic conductive board 3 is fixed, and the other end of magnetic conductive core column 6 is inserted into the central through hole 8.1 of voice coil orientation cylinder 8, and magnetic conductive core column 6 leads with voice coil
It is slidably matched to cylinder 8, multiple thermally conductive sheets 14 is equipped in magnetic conductive core column 6, the upper end of the first magnetic conductive board 3 is equipped with heat-radiating substrate 15, dissipates
Hot substrate 15 be equipped with several radiating fins 16, thermally conductive sheet 14 sequentially run through magnetic conductive core column 6 and the first magnetic conductive board 3, and with heat dissipation
Substrate 15 is fixed, and lateral wall and voice coil for reducing magnetic conductive core column 6 are equipped between the magnetic conductive core column 6 and voice coil orientation cylinder 8
The lubricating structure of frictional force between 8 madial wall of guide cylinder.
The lubricating structure includes inner annular plate 9 and the annular outer plate 10 that is placed on outside inner annular plate 9, inner annular plate 9 with lead
6 tight fit of magnetic core column, annular outer plate 10 and 8 tight fit of voice coil orientation cylinder, 9 upper end of the inner annular plate and annular outer plate 10 it is upper
It is connected respectively by an elastic membrane 11 between end and between 9 lower end of inner annular plate and the lower end of annular outer plate 10, and in annular
Plate 9, annular outer plate 10 and elastic membrane 11 surround the annular cavity 17 to form a sealing, and lubricating fluid is enclosed in annular cavity 17.
The inner annular plate 9, annular outer plate 10 and elastic membrane 11 are that same rubber material is made.
It is each provided on the lateral wall of the magnetic conductive core column 6 and anti-slop serrations 12 on the madial wall of voice coil orientation cylinder 8.
The inner annular plate 9, annular outer plate 10 and elastic membrane 11 are an integral structure.
The elastic membrane 11 is equipped with the valve cock 13 for injecting or being discharged lubricating fluid.
The frame 1 is horn-like structure, and osculum end 1.1 is the upper end in attached drawing, and big opening end 1.2 is in attached drawing
Lower end.
Inner annular plate 9, annular outer plate 10 and elastic membrane 11 are an integral structure, and refer to inner annular plate 9,10 and of annular outer plate
11 three of elastic membrane is the monolithic film membrane structure of equal wall thickness made of same material, is being packed into magnetic conductive core column 6 and voice coil orientation cylinder 8
Between when, the part for being close to magnetic conductive core column 6 is inner annular plate 9, and the part for being close to voice coil orientation cylinder 8 is annular outer plate 10,
Transition portion between the two is elastic membrane 11, but three is whole, therefore in 8 phase of magnetic conductive core column 6 and voice coil orientation cylinder
To in sliding process, inner annular plate 9, annular outer plate 10 and 11 three of elastic membrane constantly roll.That is, inner annular plate
Arbitrary point position on 9 can be that rolling is set 11 in elastic membrane, become elastic membrane 11 when being moved with magnetic conductive core column 6
A part is further rolled to the part for becoming annular outer plate 10 in annular outer plate 10.Therefore, inner annular plate 9, annular are outer
Plate 10 and elastic membrane 11 refer to that node, the part for being close to magnetic conductive core column 6 are inner annular plate 9 at any time, are close to voice coil and lead
Part to cylinder 8 is annular outer plate 10, and transition portion between the two is elastic membrane 11.
Preferred embodiments of the present invention are described above, but are not to be construed as limiting the scope of the invention.This hair
Bright to be not only limited to above example, concrete structure is allowed to vary, all institutes in the protection domain of demand for independence of the present invention
The various change of work is within the scope of the invention.
Claims (1)
1. a kind of loud speaker, it includes frame (1), cone (2), the first magnetic conductive board (3), the second magnetic conductive board (4), drive magnet
(5), magnetic conductive core column (6), voice coil (7) and voice coil orientation cylinder (8), the drive magnet (5) be clamped in the first magnetic conductive board (3) and
Between second magnetic conductive board (4), the second magnetic conductive board (4) and the osculum end (1.1) of frame (1) are fixed, and voice coil (7) is wound in voice coil and leads
Outside to cylinder (8), and with voice coil orientation cylinder (8) it is placed in the centre bore (5.1) of drive magnet (5), the one of voice coil orientation cylinder (8)
One end with cone (2) is held to fix, cone (2) is set up in frame (1), and the outer rim of the other end of cone (2) and frame (1)
Big opening end (1.2) it is fixed, one end of magnetic conductive core column (6) and the first magnetic conductive board (3) are fixed, and the other end of magnetic conductive core column (6) is inserted
In the central through hole (8.1) for entering voice coil orientation cylinder (8), magnetic conductive core column (6) is slidably matched with voice coil orientation cylinder (8), and feature exists
In：Multiple thermally conductive sheets (14) are equipped in magnetic conductive core column (6), the upper end of the first magnetic conductive board (3) is equipped with heat-radiating substrate (15), and radiate base
Plate (15) is equipped with several radiating fins (16), and thermally conductive sheet (14) sequentially runs through magnetic conductive core column (6) and the first magnetic conductive board (3), and
It is fixed with heat-radiating substrate (15), it is equipped between the magnetic conductive core column (6) and voice coil orientation cylinder (8) for reducing magnetic conductive core column (6)
Lateral wall and voice coil orientation cylinder (8) madial wall between frictional force lubricating structure；
The lubricating structure includes inner annular plate (9) and is placed on the annular outer plate (10) of inner annular plate (9) outside, inner annular plate (9)
With magnetic conductive core column (6) tight fit, annular outer plate (10) and voice coil orientation cylinder (8) tight fit, inner annular plate (9) upper end and ring
Pass through a bullet respectively between the upper end of shape outside plate (10) and between inner annular plate (9) lower end and the lower end of annular outer plate (10)
Property film (11) connect, and inner annular plate (9), annular outer plate (10) and elastic membrane (11) surround the annular cavity to form a sealing
(17), lubricating fluid is enclosed in annular cavity (17)；
The inner annular plate (9), annular outer plate (10) and elastic membrane (11) are that same rubber material is made；
It is each provided on the lateral wall of the magnetic conductive core column (6) and anti-slop serrations (12) on the madial wall of voice coil orientation cylinder (8)；
The inner annular plate (9), annular outer plate (10) and elastic membrane (11) are an integral structure；
The elastic membrane (11) is equipped with the valve cock (13) for injecting or being discharged lubricating fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613122.2A CN105142083B (en) | 2015-09-23 | 2015-09-23 | Loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510613122.2A CN105142083B (en) | 2015-09-23 | 2015-09-23 | Loud speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105142083A CN105142083A (en) | 2015-12-09 |
| CN105142083B true CN105142083B (en) | 2018-08-24 |
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ID=54727266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510613122.2A Active CN105142083B (en) | 2015-09-23 | 2015-09-23 | Loud speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105142083B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959886B (en) * | 2016-06-22 | 2020-03-24 | 新昌县七星街道鑫瑞机械厂 | High strength high heat dispersion speaker |
| CN108551644B (en) * | 2018-07-11 | 2023-12-19 | 嘉兴市金利达电子有限公司 | Heat dissipation type loudspeaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465207A (en) * | 2001-07-19 | 2003-12-31 | 松下电器产业株式会社 | Speaker and method of manufacturing the speaker |
| CN201328183Y (en) * | 2008-09-03 | 2009-10-14 | 斯贝克电子（嘉善）有限公司 | Loudspeaker |
| CN102547537A (en) * | 2012-01-29 | 2012-07-04 | 邱向康 | Radiation device for moving coil speaker |
| CN204014040U (en) * | 2014-06-25 | 2014-12-10 | 金坛泰成电子科技有限公司 | A kind of heat dissipation type elastic buffer Loudspeaker diaphragm module |
| CN204131720U (en) * | 2014-09-29 | 2015-01-28 | 联想(北京)有限公司 | Loud speaker and electronic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7711138B2 (en) * | 2005-04-18 | 2010-05-04 | Howze Bruce W | Loudspeaker including a cone circumscribed by a stiffener |
-
2015
- 2015-09-23 CN CN201510613122.2A patent/CN105142083B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465207A (en) * | 2001-07-19 | 2003-12-31 | 松下电器产业株式会社 | Speaker and method of manufacturing the speaker |
| CN201328183Y (en) * | 2008-09-03 | 2009-10-14 | 斯贝克电子（嘉善）有限公司 | Loudspeaker |
| CN102547537A (en) * | 2012-01-29 | 2012-07-04 | 邱向康 | Radiation device for moving coil speaker |
| CN204014040U (en) * | 2014-06-25 | 2014-12-10 | 金坛泰成电子科技有限公司 | A kind of heat dissipation type elastic buffer Loudspeaker diaphragm module |
| CN204131720U (en) * | 2014-09-29 | 2015-01-28 | 联想(北京)有限公司 | Loud speaker and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105142083A (en) | 2015-12-09 |
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