CN207369292U - A kind of double adjusting magnetic circuits of loudspeaker - Google Patents
A kind of double adjusting magnetic circuits of loudspeaker Download PDFInfo
- Publication number
- CN207369292U CN207369292U CN201721253424.4U CN201721253424U CN207369292U CN 207369292 U CN207369292 U CN 207369292U CN 201721253424 U CN201721253424 U CN 201721253424U CN 207369292 U CN207369292 U CN 207369292U
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- CN
- China
- Prior art keywords
- iron
- copper coil
- coil
- loudspeaker
- magnetosheath
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Abstract
The utility model discloses a kind of double adjusting magnetic circuits of loudspeaker, including T iron, magnet steel and upper conduction magnetic board, the magnet steel is set in T iron, the upper conduction magnetic board is fixed on the magnet steel upper surface, the periphery of the magnet steel is surrounded with the first copper coil of some circles, magnetosphere is embedded with the center column of the T iron, the periphery of the magnetosphere is surrounded with the second copper coil of some circles, first copper coil and the both ends of the second copper coil connect and compose two closed circuits by conducting wire and power supply, first copper coil concatenates one first regulation resistance with the closed circuit of electric power generating composition, second copper coil concatenates one second regulation resistance with the closed circuit of electric power generating composition.The utility model forms two magnetic route structure using magnet steel and magnetosphere, and in magnet steel and magnetosphere outer wrap copper coil, has inductance effect, and forms double loop, by setting regulation resistance on circuit, reaches the effect that magnetic field intensity can be adjusted on a large scale.
Description
【Technical field】
The technical field of loudspeaker is the utility model is related to, more particularly to a kind of double adjusting magnetic circuits of loudspeaker.
【Background technology】
Loudspeaker is also known as " loudspeaker ", is a kind of very common electro-acoustic transducer device, in the electronic electric equipment of sounding
It can be seen.Loudspeaker has numerous species, but its basic operation principle is similar, is that one kind converts electrical signals to
The element that voice signal is reset.At present, the most widely used is dynamic speaker, it is by vibrating membrane, voice coil loudspeaker voice coil, permanent
Magnet, stent etc. form.After the voice coil loudspeaker voice coil of loudspeaker is passed through tone currents, voice coil loudspeaker voice coil just produces the magnetic of alternation under the action of electric current
, permanent magnet also produces the constant constant magnetic field of a size and Orientation at the same time.It is big due to magnetic field caused by voice coil loudspeaker voice coil
Small and direction is constantly changing with the change of tone currents, and the interaction in two such magnetic field makes voice coil loudspeaker voice coil make perpendicular to voice coil loudspeaker voice coil
The movement of middle current direction, since voice coil loudspeaker voice coil is connected with vibrating membrane, so as to drive vibrating membrane to produce vibration, is caused by vibrating membrane vibration
The vibration of air and make a sound.When the electric current of input voice coil loudspeaker voice coil is bigger, the active force in its magnetic field is bigger, the width of vibrating membrane vibration
Degree is also bigger, and sound is then louder.
Find in use, the performance of loudspeaker cannot be lifted very well as permanent magnet using ferrite magnetic steel, still
It is all too high using Nd-Fe-B magnet steel as permanent magnet cost, and existing subwoofer can only come out full range music,
Regulatory function without intensity, easily causes high-frequency signal to damage subwoofer.In order to solve problem above, it is necessary to
It is proposed a kind of double adjusting magnetic circuits of loudspeaker.
【Utility model content】
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of double adjusting magnetic circuit of loudspeaker systems
System, it aims to solve the problem that the performance that cannot lift loudspeaker very well as permanent magnet using ferrite magnetic steel in the prior art, and
The technical problem of regulatory function without intensity.
To achieve the above object, the utility model proposes a kind of double adjusting magnetic circuits of loudspeaker, including T iron, magnet steel
And upper conduction magnetic board, the magnet steel are set in T iron, the upper conduction magnetic board is fixed on the magnet steel upper surface, described
The periphery of magnet steel be surrounded with the first copper coil of some circles, be embedded with magnetosphere, the magnetosphere on the center column of the T iron
Periphery be surrounded with the second copper coil of some circles, the both ends of first copper coil and the second copper coil pass through conducting wire and electricity
Source connects and composes two closed circuits, and first copper coil concatenates one first adjusting electricity with the closed circuit of electric power generating composition
Resistance, second copper coil concatenate one second regulation resistance with the closed circuit of electric power generating composition.
Formed preferably, first copper coil is helically wound around magnet steel periphery using copper wire, second bronze medal
Coil is helically wound around magnetosphere periphery using copper wire and forms, and the rotation direction of first copper coil and the second copper coil is identical.
Preferably, being provided with a ring annular groove on the center column of the T iron, and it is provided with the periphery of annular groove
One astragal ring recess, the magnetosphere are inlaid in annular groove, and second copper coil is located in coil groove, second bronze medal
The both ends of coil are pierced by from the lower magnetic conductive board of T iron.
Preferably, the annular groove is communicated with coil groove, and it is upper end opening lower end closed, the annular groove
Depth be more than the depth of coil groove, the bottom of the magnetosphere and annular groove tight fit.
Preferably, the magnetosphere uses neodymium iron boron magnetosphere.
Preferably, the periphery of first copper coil is provided with magnetosheath, the magnetosheath is by upper magnetosheath and lower magnetosheath
Obvolvent forms, and the through hole passed through for copper wire or conducting wire is offered on the upper magnetosheath and lower magnetosheath.
Preferably, the equidistant circular row in lower end of the upper magnetosheath has some first strips, the lower magnetosheath it is upper
Hold equidistant circular row to have some second strips, first strip and the interlaced setting of the second strip, pass through the first strip
The upper magnetosheath of realization and lower magnetosheath fitting are tightly engaged with the second strip.
Preferably, the center of the T iron is hollow, heat conducting sleeve, the lower end of T iron are provided with the hollow inner wall of T iron
The thermally conductive sheet being connected with heat conducting sleeve is provided with face, some radiating fins are provided with the thermally conductive sheet.
The beneficial effects of the utility model：Compared with prior art, a kind of double adjusting loudspeakers provided by the utility model
Magnetic circuit system, rational in infrastructure, by being embedded in a magnetosphere again in T iron, and magnetosphere uses neodymium iron boron magnetosphere, can effectively improve magnetism
Can, help to lift loudspeaker parameters, moreover it is possible to ensure that voice coil loudspeaker voice coil is always maintained at vacant state in high-speed cruising, without contacting T iron axis
Wall, substantially prolongs the service life of voice coil loudspeaker voice coil；In addition, all wrapping copper coil in the periphery of magnet steel and magnetosphere, there is inductance effect,
Copper coil connects and composes two closed circuits by conducting wire and power supply, concatenates a regulation resistance on each closed circuit, passes through
Regulation resistance changes resistance value, with regard to that can change the size of current in circuit, and then magnetic field intensity is adjusted, using double loop tune
Section, the regulating effect of loudness of a sound more, adjustable range also bigger；Heat conducting sleeve, thermally conductive sheet and radiating fin are set in T iron, can be by height
Windage thermal energy caused by intensity moves up and down radiates in time, helps to lift the performance of loudspeaker.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
【Brief description of the drawings】
Fig. 1 is a kind of double structure diagrams for adjusting the magnetic circuit of loudspeaker of the utility model embodiment；
Fig. 2 is the top view after the T iron, magnet steel and upper conduction magnetic board assembling of the utility model embodiment；
Fig. 3 is the structure diagram of the T iron of the utility model embodiment；
Fig. 4 is the structure diagram of the magnetosheath of the utility model embodiment.
In figure：Magnetic conductive board, 15- heat conducting sleeves, 16- under 1-T iron, 11- center columns, 12- annular grooves, 13- coils groove, 14-
Thermally conductive sheet, 17- radiating fins, 2- magnet steel, 3- upper conduction magnetic boards, the first copper coils of 4-, 5- magnetospheres, the second copper coils of 6-, 7- power supplys,
Magnetosheath, 103- through holes, 104- first under the first regulation resistances of 8-, the second regulation resistances of 9-, 10- magnetosheaths, the upper magnetosheaths of 101-, 102-
Strip, the second strips of 105-.
【Embodiment】
To make the objectives, technical solutions and advantages of the present invention clearer, below by accompanying drawings and embodiments,
The utility model is further elaborated.However, it should be understood that specific embodiment described herein is only solving
The utility model is released, the scope being not intended to limit the present invention.In addition, in the following description, eliminate to known features
With the description of technology, to avoid the concept of the utility model is unnecessarily obscured.
Refering to Fig. 1 to Fig. 4, the utility model embodiment provides a kind of double adjusting magnetic circuits of loudspeaker, including T iron 1, magnetic
Steel 2 and upper conduction magnetic board 3, the magnet steel 2 are set in T iron 1, and the upper conduction magnetic board 3 is fixed on 2 upper surface of magnet steel
On, the periphery of the magnet steel 2 is surrounded with the first copper coil 4 of some circles, and magnetic is embedded with the center column 11 of the T iron 1
Circle 5, the periphery of the magnetosphere 5 are surrounded with the second copper coil 6 of some circles, first copper coil 4 and the second copper coil 6
Both ends connect and compose two closed circuits, the closure that first copper coil 4 is formed with power supply 7 by conducting wire and power supply 7
One first regulation resistance 8 is concatenated on circuit, one second is concatenated on the closed circuit that second copper coil 6 is formed with power supply 7
Regulation resistance 9.
First copper coil 4 is helically wound around 2 periphery of magnet steel using copper wire and forms, and second copper coil 6 is adopted
5 periphery of magnetosphere is helically wound around with copper wire to form, first copper coil 4 is identical with the rotation direction of the second copper coil 6, described
A ring annular groove 12 is provided with the center column 11 of T iron 1, and an astragal ring recess 13, institute are provided with the periphery of annular groove 12
The magnetosphere 5 stated is inlaid in annular groove 12, and second copper coil 6 is located in coil groove 13, second copper coil 6
Both ends are pierced by from the lower magnetic conductive board 14 of T iron 1, and the annular groove 12 is communicated with coil groove 13, and is under upper end opening
End seal is closed, and the depth of the annular groove 12 is more than the depth of coil groove 13, and the bottom of the magnetosphere 5 and annular groove 12 are tight
Coordinate, the magnetosphere 5 uses neodymium iron boron magnetosphere, and the periphery of first copper coil 4 is provided with magnetosheath 10, the magnetosheath
10 are formed by upper magnetosheath 101 and lower 102 obvolvent of magnetosheath, offered on the upper magnetosheath 101 and lower magnetosheath 102 for copper wire or
The through hole 103 that conducting wire passes through, the equidistant circular row in lower end of the upper magnetosheath 101 have some first strips 104, the lower magnetic
The equidistant circular row in upper end of set 102 has some second strips 105, and first strip 104 and the second strip 105 are interlaced
Set, the upper magnetosheath 101 of realization and lower 102 fitting of magnetosheath, the T iron are tightly engaged with the second strip 105 by the first strip 104
1 center is hollow, and heat conducting sleeve 15 is provided with the hollow inner wall of T iron 1, is provided with the lower face of T iron 1 and 15 phase of heat conducting sleeve
Thermally conductive sheet 16 even, is provided with some radiating fins 17 on the thermally conductive sheet 16.
A kind of double adjusting magnetic circuits of loudspeaker of the utility model, it is rational in infrastructure, by being embedded in a magnetosphere again in T iron 1
5, and magnetosphere 5 uses neodymium iron boron magnetosphere, can effectively improve magnetic property, helps to lift loudspeaker parameters, moreover it is possible to ensure that voice coil loudspeaker voice coil exists
High-speed cruising is always maintained at vacant state, without contacting T iron axial wall, substantially prolongs the service life of voice coil loudspeaker voice coil；In addition, in magnet steel
2 and the periphery of magnetosphere 5 all wrap copper coil 6, there is inductance effect, copper coil 6 connects and composes two with power supply 7 by conducting wire and closes
Circuit is closed, a regulation resistance is concatenated on each closed circuit, resistance value is changed by regulation resistance, with regard to the electricity in circuit can be changed
Flow size, and then adjust magnetic field intensity, adjusted using double loop, the regulating effect of loudness of a sound more, adjustable range also bigger；
Heat conducting sleeve 15, thermally conductive sheet 16 and radiating fin 17 are set in T iron 1, the air friction heat caused by can high intensity be moved up and down
It can in time radiate, help to lift the performance of loudspeaker.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modification, equivalent substitution or improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of double adjusting magnetic circuits of loudspeaker, including T iron (1), magnet steel (2) and upper conduction magnetic board (3), the magnet steel (2)
It is set in T iron (1), the upper conduction magnetic board (3) is fixed on described magnet steel (2) upper surface, it is characterised in that：Described
The periphery of magnet steel (2) is surrounded with the first copper coil of some circles (4), and magnetosphere is embedded with the center column (11) of the T iron (1)
(5), the periphery of the magnetosphere (5) is surrounded with the second copper coil of some circles (6), first copper coil (4) and the second bronze medal
The both ends of coil (6) connect and compose two closed circuits, first copper coil (4) and electricity by conducting wire and power supply (7)
One first regulation resistance (8) is concatenated on the closed circuit that source (7) is formed, second copper coil (6) is formed with power supply (7)
One second regulation resistance (9) is concatenated on closed circuit.
A kind of 2. double adjusting magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：First copper coil
(4) it is helically wound around magnet steel (2) periphery using copper wire to form, second copper coil (6) is helically wound around magnetic using copper wire
Circle (5) periphery forms, and first copper coil (4) is identical with the rotation direction of the second copper coil (6).
A kind of 3. double adjusting magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The center of the T iron (1)
A ring annular groove (12) is provided with cylinder (11), and an astragal ring recess (13) is provided with the periphery of annular groove (12), it is described
Magnetosphere (5) be inlaid in annular groove (12), second copper coil (6) be located at that coil groove (13) is interior, second bronze medal
The both ends of coil (6) are pierced by from the lower magnetic conductive board (14) of T iron (1).
A kind of 4. double adjusting magnetic circuits of loudspeaker as claimed in claim 3, it is characterised in that：The annular groove (12) with
Coil groove (13) communicates, and is upper end opening lower end closed, and the depth of the annular groove (12) is more than coil groove (13)
Depth, bottom and annular groove (12) tight fit of the magnetosphere (5).
5. the double adjusting magnetic circuits of loudspeaker of one kind as described in any one in Claims 1-4, it is characterised in that：It is described
Magnetosphere (5) use neodymium iron boron magnetosphere.
A kind of 6. double adjusting magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：First copper coil
(4) periphery is provided with magnetosheath (10), and the magnetosheath (10) is formed by upper magnetosheath (101) and lower magnetosheath (102) obvolvent, described
Upper magnetosheath (101) and lower magnetosheath (102) on offer the through hole (103) passed through for copper wire or conducting wire.
A kind of 7. double adjusting magnetic circuits of loudspeaker as claimed in claim 6, it is characterised in that：The upper magnetosheath (101)
The equidistant circular row in lower end have some first strips (104), the equidistant circular row in upper end of the lower magnetosheath (102) has some
Two strips (105), first strip (104) and the second strip (105) interlaced setting, pass through the first strip (104)
The upper magnetosheath (101) of realization and lower magnetosheath (102) fitting are tightly engaged with the second strip (105).
A kind of 8. double adjusting magnetic circuits of loudspeaker as claimed in claim 1, it is characterised in that：The center of the T iron (1)
To be hollow, heat conducting sleeve (15) is provided with the hollow inner wall of T iron (1), is provided with the lower face of T iron (1) and heat conducting sleeve (15)
Connected thermally conductive sheet (16), is provided with some radiating fins (17) on the thermally conductive sheet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253424.4U CN207369292U (en) | 2017-09-27 | 2017-09-27 | A kind of double adjusting magnetic circuits of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253424.4U CN207369292U (en) | 2017-09-27 | 2017-09-27 | A kind of double adjusting magnetic circuits of loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207369292U true CN207369292U (en) | 2018-05-15 |
Family
ID=62350243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721253424.4U Expired - Fee Related CN207369292U (en) | 2017-09-27 | 2017-09-27 | A kind of double adjusting magnetic circuits of loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207369292U (en) |
-
2017
- 2017-09-27 CN CN201721253424.4U patent/CN207369292U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20200927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |