CN203219482U - Driver for electrodynamic loudspeaker - Google Patents
Driver for electrodynamic loudspeaker Download PDFInfo
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- CN203219482U CN203219482U CN 201320105882 CN201320105882U CN203219482U CN 203219482 U CN203219482 U CN 203219482U CN 201320105882 CN201320105882 CN 201320105882 CN 201320105882 U CN201320105882 U CN 201320105882U CN 203219482 U CN203219482 U CN 203219482U
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Abstract
The utility model provides a driver for an electrodynamic loudspeaker. The driver comprises a pole plate, a magnet which is positioned on the pole plate and comprises an outer magnet and an inner magnet, a magnetic pole which is positioned on the magnet and comprises an outer magnetic pole and an inner magnetic pole, and a voice coil which is positioned in a gap formed between the outer magnet and the inner magnet, the outer magnetic pole and the inner magnetic pole, wherein the periphery of the voice coil is in an inwardly concave shape.
Description
Technical field
The utility model relates to loud speaker, more specifically, relates to for the driver that drives dynamic speaker.
Background technology
Loud speaker is a kind of for the device that sends sound wave, wherein the most normal use be dynamic speaker.
Dynamic speaker is made of three systems usually: vibrational system comprises conical diaphragm or plate vibration film, centring disk etc.; Driver comprises permanent magnet, conduction magnetic sheet, newel etc.; And auxiliary system, comprise flexible hanger, wiring board, protecgulum etc.
Dynamic speaker uses lightweight vibrating membrane or the taper basin that is connected to rigid frame or framework via flexible hanger, and described rigid frame or framework limit the voice coil loudspeaker voice coil of thin tinsel cord to move through cylindrical magnetic gap vertically.When applying electric current to voice coil loudspeaker voice coil, electric current produces magnetic field in voice coil loudspeaker voice coil, thereby forms variable magnet.The magnetic circuit system of voice coil loudspeaker voice coil and driver interacts, and produces mechanical force, and described mechanical force moves forward and backward voice coil loudspeaker voice coil (and then making the taper basin that connects), thereby reproduces sound under the control that applies the signal of telecommunication from amplifier.
A kind of method that increases dynamic speaker output is to improve operating current, and this realizes by the impedance that reduces the voice coil loudspeaker voice coil in the conventional loud speaker or the power that increases amplifier usually.
Yet all there is heater coil in above-mentioned two kinds of methods, thereby for how the high temperature resistant degree (above 150 degrees centigrade) for the treatment of coil and other parts of closely contacting with coil is brought great challenge.
Therefore, need a kind of driver for dynamic speaker, described driver can increase the sensitivity of loud speaker and not heater coil and other parts of closely contacting with coil simultaneously.
Summary of the invention
In view of above-mentioned needs, inventor of the present utility model has carried out a large amount of research by hard work, provides a kind of for the effective ways that solve foregoing problems, and has made the utility model accordingly.
Correspondingly, a purpose of the present utility model provides a kind of driver for dynamic speaker, and described driver can increase the sensitivity of loud speaker under the situation of the power level that does not increase dynamic speaker.
Below many aspects of the present utility model will be described.
First aspect of the present utility model relates to a kind of driver for dynamic speaker, and described driver comprises pole plate; Be positioned at the magnet on the pole plate, described magnet comprises outer magnet and inner magnet; Be positioned at the magnetic pole on the magnet, described magnetic pole comprises outer magnetic pole and internal magnetic pole; And the voice coil loudspeaker voice coil in the space that between by described outer magnet and described inner magnet and described outer magnetic pole and described internal magnetic pole, forms, it is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
In first aspect, described concave shape can be H shape or S shape.
In first aspect, what described concave shape can be for part periphery depression is irregularly shaped.
In first aspect, the space that forms between described outer magnet and described inner magnet can be H shape or S shape or other concave shape arbitrarily.
In first aspect, the space that forms between described outer magnetic pole and described outer magnetic pole can be H shape or S shape or other concave shape arbitrarily.
In first aspect, the shape in described space can with the part periphery cave inward irregularly shaped corresponding.
In first aspect, described voice coil loudspeaker voice coil can be wound into outstanding shape, carries out reprocessing then to form H shape, S shape or other concave shape arbitrarily in fixture.
Second aspect of the present utility model provides a kind of driver for dynamic speaker, and it comprises: pole plate; Be positioned at the magnet on the described pole plate, described magnet comprises two outer magnets; Be positioned at the magnetic pole on the described magnet, described magnetic pole comprises two outer magnetic poles and an internal magnetic pole; And between by described two outer magnets and the voice coil loudspeaker voice coil in the space that forms between described two outer magnetic poles and the described internal magnetic pole; It is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
In second aspect, described concave shape can be H shape or S shape.
In second aspect, described concave shape can for its part periphery cave inward irregularly shaped.
The third aspect of the present utility model provides a kind of driver for dynamic speaker, and it comprises: pole plate; Be positioned at the inner magnet on the described pole plate; Be positioned at the magnetic pole on the described inner magnet, described magnetic pole comprises an internal magnetic pole and a plurality of outer magnetic pole; And the voice coil loudspeaker voice coil in the space that between by a described internal magnetic pole and described a plurality of outer magnetic pole, forms; It is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
In the third aspect, described concave shape can be H shape or S shape.
In the third aspect, described concave shape can for its part periphery cave inward irregularly shaped.
Fourth aspect of the present utility model provides a kind of loud speaker, and described loud speaker has the driver according to either side in described first, second, and third aspect.
In fourth aspect, described loud speaker can also comprise the frame that is positioned at around described pole plate, described magnet and the described magnetic pole.
In fourth aspect, described loud speaker can also comprise on the top edge that is positioned at described frame and the protecgulum that engages with described frame.
In fourth aspect, described loud speaker can also comprise the flexible hanger of annular, and its outer rim is fixed between described frame and the described protecgulum.
In fourth aspect, described loud speaker can also comprise and is positioned at the vibrating diaphragm that described voice coil loudspeaker voice coil top and its periphery are connected with the inward flange of described flexible hanger.
In fourth aspect, the remolding sensitivity of described loud speaker is furnished with the loud speaker height 0.5dB at least of the voice coil loudspeaker voice coil of outstanding shape, is preferably up to few 1dB, is more preferably up to few 2dB.Described outstanding shape for example be circular, oval, the competition field is run-track shaped or other outstanding shape arbitrarily.
The material of voice coil loudspeaker voice coil is not done concrete restriction, as long as it is applicable to loud speaker.The limiting examples of voice coil loudspeaker voice coil comprises for example Cu(copper) and CCA(be covered with the aluminium of copper), Al(aluminium) etc.Also can use other material.
For example, the fixture that uses in described reprocessing can have mobile parts.Perhaps, during reprocessing, heat (utilizing the heating of hot-air or baking oven).
Aforementioned aspect of the present utility model has realized following advantage.
By the voice coil loudspeaker voice coil that employing has concave shape, the length of the voice coil loudspeaker voice coil in the driver can increase, thereby provides the advantage that increases sensitivity and do not increase its power simultaneously for dynamic speaker of the present utility model.This will no longer need to increase the operating current of driver, therefore avoid causing owing to reduction resistance the shortcoming of coil heats effectively, otherwise the job stability after coil heats can raise to temperature bring great challenge.
In addition, because use has the voice coil loudspeaker voice coil that the voice coil loudspeaker voice coil of concave shape replaces the conventional outstanding shape of using in the prior art, so also have following extra advantage according to dynamic speaker of the present utility model:
1) provides bigger contact area for voice coil loudspeaker voice coil being adhered to the acoustic radiation plate, thereby allowed to use the acoustic radiation plate of thinner (lighter) to improve its sensitivity;
2) for the bonding of magnet system based on 2 or more magnets provides bigger contact area, thereby increased the reliability of drop test; And
3) provide bigger voice coil loudspeaker voice coil girth, thereby cooling effect is increased, reduced working temperature thus.
Description of drawings
Describe exemplary of the present utility model below with reference to accompanying drawing, feature of the present utility model, advantage and technology and industrial significance will become more obvious from these are described.Wherein:
Fig. 1 is the cross sectional view according to an example of driver of the present utility model;
Fig. 2 is the cross sectional view according to the magnetic system with H shape voice coil loudspeaker voice coil of first embodiment of the present utility model;
Fig. 3 is the decomposition view according to the loud speaker with H shape voice coil loudspeaker voice coil of first embodiment of the present utility model;
Fig. 4 is the relatively diagram that adopts the prior art rectangular coil of identical table area according to the process that is used to form H shape voice coil loudspeaker voice coil of first embodiment and in loud speaker;
Fig. 5 is the sectional view according to the magnetic system of the driver with S shape voice coil loudspeaker voice coil of second embodiment of the present utility model;
Fig. 6 is the decomposition view according to the driver with S shape voice coil loudspeaker voice coil of second embodiment of the present utility model;
Fig. 7 is the relatively diagram that adopts the prior art rectangular coil of identical table area according to the process that is used to form S shape voice coil loudspeaker voice coil of second embodiment and in the loud speaker frame.
Example cited herein only is that exemplary of the present utility model is described for example, and should not be regarded as limiting by any way scope of the present utility model.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Embodiment disclosed herein has no intention exhaustive or the utility model is limited to disclosed concrete form in the following detailed description.On the contrary, select and the purpose of describing these embodiments only is for making those of ordinary skill in the art can implement the utility model.
To describe the embodiment of the driver that is used for dynamic speaker below in detail.
First embodiment
The present embodiment provides a kind of H of having shape voice coil loudspeaker voice coil, is used for the driver of dynamic speaker.
Below in conjunction with Fig. 2-4 first embodiment is described.Fig. 2 is the sectional view according to the magnetic system with H shape voice coil loudspeaker voice coil of first embodiment of the present utility model.Fig. 3 is the decomposition view that has the loud speaker of H shape voice coil loudspeaker voice coil in the H type driver according to first embodiment of the present utility model.
At first, with reference to figure 3, it provides a kind of dynamic speaker, and described loud speaker comprises: pole plate 1; Be arranged on the magnet 2 on the pole plate 1, described magnet 2 comprises outer magnet 2a and inner magnet 2b; Be arranged on the magnetic pole 3 on the described magnet 2, described magnetic pole 3 comprises outer magnetic pole 3a and internal magnetic pole 3b; Be arranged on described pole plate 1, described magnet 2 and described magnetic pole 3 frame 4 on every side; Be arranged on the top edge of described frame 4 and the protecgulum 5 that engages with described frame 4; The flexible hanger (or hinge) 6 of annular, its outer rim is fixed between described frame 4 and the described protecgulum 5; Be arranged on by the voice coil loudspeaker voice coil 7 in the space that forms between outer magnet 2a and inner magnet 2b and outer magnetic pole 3a and the internal magnetic pole 3b; And be arranged on the described voice coil loudspeaker voice coil 7 and vibrating diaphragm 8 that its periphery is connected with the inward flange of described flexible hanger (or hinge) 6.Described voice coil loudspeaker voice coil 7 has the H shape.
Voice coil loudspeaker voice coil 7 is connected to rigidity vibrating diaphragm 8, and vibrating diaphragm 8 is connected to flexible hanger (or hinge) 6 at its periphery, thereby makes vibrating diaphragm 8 to move up and down, and produces acoustic pressure thus.The power that promotion vibrating diaphragm 8 moves up and down is from voice coil loudspeaker voice coil 7, and described voice coil loudspeaker voice coil 7 is arranged in the magnetic field in the space of magnetic system.When electric current flows through in the coil of voice coil loudspeaker voice coil, produce described power.This electric current is from the electron-amplifier (not shown) of transmission signal (voice and music).
With reference now to Fig. 4,, it schematically shows the process for the manufacture of H shape voice coil loudspeaker voice coil.For example, H shape voice coil loudspeaker voice coil can form rectangular coil by reeling, and carries out reprocessing at the fixture (not shown) then and obtains.For example, described reprocessing can comprise and makes rectangular coil in the part of its periphery depression.The part of described depression can be positioned at the middle part, long limit of rectangular coil.As a replacement scheme, the part of described depression also can be positioned at the minor face middle part of described rectangular coil, shown in the figure below among Fig. 4.
Perhaps, the part of described depression also can be formed on the long limit of rectangular coil or other position of minor face, as long as it has concave shape.The part of described depression can form the shape of half rectangle, as shown in Figure 4, perhaps, also can form semicircular in shape or other is irregularly shaped.
In addition, described voice coil loudspeaker voice coil also can by original shape for for example circular, oval, the competition field is run-track shaped or arbitrarily the voice coil loudspeaker voice coil of other outstanding shape make.
In the first embodiment, provide a kind of H of use shape voice coil loudspeaker voice coil, be used for the driver of loud speaker.Owing to adopt the voice coil loudspeaker voice coil with described H shape, correspondingly, for example, compare with initial rectangular coil, the effective length of described voice coil loudspeaker voice coil has increased at least 5%, preferably at least 10%, preferably at least 20%, preferably at least 30%, preferably at least 40%, preferably at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, preferably at least 100%, preferably at least 200%, even can be the several times of the length of initial rectangular voice coil loudspeaker voice coil, and can not increase the area of driver.Therefore, can significantly improve the sensitivity of loud speaker, and not increase the power level of loud speaker simultaneously.
Second embodiment
Describe and similar second embodiment of first embodiment below with reference to Fig. 5,6 and 7.
The difference of the driver that provides in the driver that provides in second embodiment and first embodiment is that it comprises S shape voice coil loudspeaker voice coil, as shown in Figure 5.
With reference to figure 6, comprise pole plate 1 according to the driver that is used for dynamic speaker of second embodiment; Be arranged on the inner magnet 2b on the pole plate 1, it comprises two outer magnet 2a; Be arranged on the magnetic pole 3b on the magnet, it comprises two outer magnetic pole 3a; Be arranged between outer magnet 2a and the inner magnet 2b and the voice coil loudspeaker voice coil 7 in the space that forms between outer magnetic pole 3a and the internal magnetic pole 3b, wherein said voice coil loudspeaker voice coil 7 has the S shape.
With reference now to Fig. 7,, it schematically shows the process for the manufacture of S shape voice coil loudspeaker voice coil.For example, S shape voice coil loudspeaker voice coil can form rectangular coil by at first reeling, and carries out reprocessing at the fixture (not shown) then and obtains.For example, described reprocessing can comprise and makes rectangular coil in the part of its periphery depression.The part of described depression can be positioned at the middle part, long limit of rectangular coil.As a replacement scheme, the part of described depression also can be positioned at the minor face middle part of described rectangular coil, shown in the figure below among Fig. 4.
Perhaps, the part of described depression also can be formed on the long limit of rectangular coil or other position of minor face, as long as it has concave shape.The part of described depression can form semicircular shape, as shown in Figure 7, perhaps, also can form half rectangular shape or irregularly shaped.
In second embodiment, a kind of S of use shape voice coil loudspeaker voice coil is provided, has been used for the driver of loud speaker.Owing to adopt the voice coil loudspeaker voice coil with described S shape, correspondingly, compare with initial rectangular coil, the effective length of described voice coil loudspeaker voice coil has increased at least 5%, preferably at least 10%, preferably at least 20%, preferably at least 30%, preferably at least 40%, preferably at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, preferably at least 100%, preferably at least 200%, even can be the several times of the length of initial rectangular voice coil loudspeaker voice coil.Therefore, can significantly improve the sensitivity of loud speaker, and not increase the power level of loud speaker.
Embodiment 1: estimate the sensitivity increase with respect to the rectangular coil loud speaker of prior art
An embodiment will be provided below, illustrating effect of the present utility model, but not the utility model be limited to this.
Particularly, make the copper voice coil loudspeaker voice coil of S shape in the following way: at first a copper wire is wound into rectangular shape, carries out reprocessing to form S shape voice coil loudspeaker voice coil at fixture then.
Described S shape voice coil loudspeaker voice coil is arranged on as in the dynamic speaker that provides in second embodiment, and the sensitivity of measuring and calculating thus obtained loud speaker as follows.
Magnetic system hypothesis/calculate:
" standard " 11 * 15 * 3.5mm loud speaker with " pushing away/draw " magnetic system: pushing away/drawing the B field in the magnetic circuit system: 0.72T(simulation), suppose that S shape magnetic system has identical B field (although gap lengths is longer).This is because outer magnet is bigger.Need simulate to confirm.
Voice coil loudspeaker voice coil calculates:
Because " I " (voice coil loudspeaker voice coil length) is longer, so sensitivity increases: 42.5mm/31.4mm=1.354gg → 2.63dB;
Moving mass calculates:
1. have the moving mass of rectangular coil now
Because the change of sensitivity that moving mass causes:
The loud speaker moving mass of Comparative Examples (rectangle):
Voice coil loudspeaker voice coil: 21mg
Oscillating plate: 20mg
Silicon rubber suspension (hinge), adhesive etc.: 26mg
Amount to: 67mg
2. the moving mass of S shape voice coil loudspeaker voice coil of the present utility model:
Voice coil loudspeaker voice coil: 28.4mg
Oscillating plate: 15mg
Silicon rubber suspension (hinge), adhesive etc.: 26mg
Amount to: 69.4mg
Loss of sensitivity: 67mg/69.4mg=0.965 →-0.3dB.
Therefore, the sensitivity of loud speaker of the present utility model has a net increase of: 2.63dB-0.3dB=2.33dB
This shows, compare with the dynamic speaker that uses existing rectangular coil, by using according to S shape voice coil loudspeaker voice coil of the present utility model, the sensitivity of the dynamic speaker that obtains has increased about 2.33dB, and the area of its moving mass and driver etc. does not change basically.
All embodiment described herein and conditional language are intended to for the instruction purpose, with help reader understanding's the utility model and by inventor of the present utility model in the concept that promotes to contribute aspect this area, and should be interpreted as being not limited to embodiment and the condition of these concrete records.These embodiment's organizes the demonstration that does not also relate to the utility model advantage or shortcoming in specification.Although described embodiment of the present utility model in detail, should be appreciated that and under the situation that does not break away from the utility model spirit and scope, to carry out various variations, substitute and change it.
Claims (17)
1. driver that is used for dynamic speaker, it comprises:
Pole plate;
Be positioned at the magnet on the described pole plate, described magnet comprises outer magnet and inner magnet;
Be positioned at the magnetic pole on the described magnet, described magnetic pole comprises outer magnetic pole and internal magnetic pole; And
Voice coil loudspeaker voice coil in the space that between by described outer magnet and described inner magnet and described outer magnetic pole and described internal magnetic pole, forms;
It is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
2. driver according to claim 1 is characterized in that described concave shape is H shape or S shape.
3. driver according to claim 1, it is irregularly shaped to it is characterized in that described concave shape caves inward for its part periphery.
4. driver according to claim 2 is characterized in that the space that forms between described outer magnet and the described inner magnet is H shape or S shape.
5. driver according to claim 2 is characterized in that the space that forms is H shape or S shape between described outer magnetic pole and described outer magnetic pole.
6. it is irregularly shaped corresponding that driver according to claim 3, the shape that it is characterized in that the space that forms between described outer magnet and described inner magnet and described part periphery cave inward.
7. driver that is used for dynamic speaker, it comprises:
Pole plate;
Be positioned at the magnet on the described pole plate, described magnet comprises two outer magnets;
Be positioned at the magnetic pole on the described magnet, described magnetic pole comprises two outer magnetic poles and an internal magnetic pole; And
Between described two outer magnets and the voice coil loudspeaker voice coil in the space that forms between described two outer magnetic poles and the described internal magnetic pole;
It is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
8. driver according to claim 7 is characterized in that described concave shape is H shape or S shape.
9. driver according to claim 7 is characterized in that described concave shape is the irregularly shaped of its part periphery depression.
10. driver that is used for dynamic speaker, it comprises:
Pole plate;
Be positioned at the inner magnet on the described pole plate;
Be positioned at the magnetic pole on the described inner magnet, described magnetic pole comprises an internal magnetic pole and a plurality of outer magnetic pole; And
Voice coil loudspeaker voice coil in the space that between by described internal magnetic pole and described outer magnetic pole, forms;
It is characterized in that described voice coil loudspeaker voice coil has the shape that its part periphery caves inward.
11. driver according to claim 10 is characterized in that described concave shape is H shape or S shape.
12. driver according to claim 10, it is irregularly shaped to it is characterized in that described concave shape caves inward for its part periphery.
13. a loud speaker, it comprises according to each described driver among the claim 1-12.
14. loud speaker according to claim 13 is characterized in that also comprising the frame that is positioned at around described pole plate, described magnet and the described magnetic pole.
15. loud speaker according to claim 14 is characterized in that also comprising on the top edge that is positioned at described frame and the protecgulum that engages with described frame.
16. loud speaker according to claim 15 is characterized in that also comprising annular flexible hanger that its outer rim is fixed between described frame and the described protecgulum.
17. loud speaker according to claim 16 is characterized in that also comprising being positioned on the described voice coil loudspeaker voice coil and vibrating diaphragm that its periphery is connected with the inward flange of described flexible hanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105882 CN203219482U (en) | 2013-03-08 | 2013-03-08 | Driver for electrodynamic loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320105882 CN203219482U (en) | 2013-03-08 | 2013-03-08 | Driver for electrodynamic loudspeaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152678A (en) * | 2013-03-08 | 2013-06-12 | 山东共达电声股份有限公司 | Driver for electrodynamic loudspeaker |
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- 2013-03-08 CN CN 201320105882 patent/CN203219482U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152678A (en) * | 2013-03-08 | 2013-06-12 | 山东共达电声股份有限公司 | Driver for electrodynamic loudspeaker |
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Address after: 261200 No. 68 Fengshan Road, Fangzi District, Weifang City, Shandong Province Patentee after: GONGDA ELECTROACOUSTIC Co.,Ltd. Address before: 261200 No. 68 Fengshan Road, Fangzi District, Weifang City, Shandong Province Patentee before: Shandong Gettop Acoustic Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |