CN204168486U - A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion - Google Patents
A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion Download PDFInfo
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- CN204168486U CN204168486U CN201420649692.8U CN201420649692U CN204168486U CN 204168486 U CN204168486 U CN 204168486U CN 201420649692 U CN201420649692 U CN 201420649692U CN 204168486 U CN204168486 U CN 204168486U
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- coil
- dynamic iron
- induction coil
- iron unit
- balanced armature
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Abstract
The utility model discloses a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion, belong to electroacoustic techniques field.The utility model comprises yoke, magnet, induction coil and balanced armature, also comprises suppression coil, and described balanced armature is through the centre of yoke, and described magnet is symmetricly set in the both sides of balanced armature, and is fixed on yoke; Described induction coil is arranged at one end of balanced armature, and described suppression coil is arranged at the other end of balanced armature; Or described suppression coil is arranged between yoke and induction coil; Or described suppression coil is arranged at the rear end of induction coil; Described suppression coil produces the induced field contrary with induction coil.The utility model restrained effectively the distortion of dynamic iron unit in low-frequency range, improves the analytic ability to bass, thus improves the bass performance of dynamic iron unit; Medium, high frequency advantage simultaneously for dynamic iron unit does not almost affect, and meets the sense of hearing demand of consumer.
Description
Technical field
The utility model relates to a kind of magnetic driving mechanism of dynamic iron unit, more particularly, relates to a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion.
Background technology
Dynamic iron unit has that soundproof effect is good, volume is little, sensitivity advantages of higher, has been widely used in earphone and audio amplifier.Compared with moving-coil unit, the frequency response curve of dynamic iron unit is more stable, and use the earphone of dynamic iron unit more to contribute to protecting hearing, but the low frequency performance that the low frequency performance of dynamic iron unit does not have moving-coil unit is good, main cause is, the magnetic driving mechanism electromagnetic conversion efficiency of dynamic iron unit is higher, and the mechanical strength of its balanced armature is larger, resonance frequency is higher, therefore dynamic iron unit in, the enlargement range of the voice signal of high frequency is better than the signal enlargement range for low-frequency sound, in causing, the voice output of high band is stronger, the voice output of low-frequency range is not enough, distortion is comparatively serious.
The magnetic driving mechanism of existing dynamic iron unit forms primarily of balanced armature, yoke, induction coil and permanent magnet, permanent magnet is symmetricly set in yoke, form the oscillation space of balanced armature, balanced armature is through the centre of two permanent magnets, one end is provided with induction coil, and one end connects vibrating diaphragm by conductive bar.Performance test is carried out to the dynamic iron unit of said structure, as shown in Figure 4, obtains distortion curve and the frequency response curve of dynamic iron unit.From the distortion curve in Fig. 4, the distortion factor in the frequency range of this dynamic iron unit within the scope of 2000Hz is higher, and the distortion especially near 1000Hz is even more serious; And in the frequency of more than 2000Hz, the distortion factor is lower, and fluctuation is very little.Carry out performance test for other dynamic iron unit on the market, all obtain and similar distortion curve in Fig. 4, visible, all there is the serious problem of low-frequency range distortion in existing dynamic iron unit.And many music-lovers have a preference for bass, this also makes the application of dynamic iron unit be subject to certain limitation, how to improve dynamic iron unit and also becomes those skilled in the art's technical problem urgently to be resolved hurrily in the performance of low-frequency range.
Summary of the invention
1. the utility model technical problem that will solve
The purpose of this utility model is to overcome that existing dynamic iron unit low-frequency distortion is serious, the deficiency of bass resolution difference, a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion is provided, adopt the technical solution of the utility model, restrained effectively the distortion of dynamic iron unit in low-frequency range, improve the analytic ability to bass, thus improve the bass performance of dynamic iron unit; Medium, high frequency advantage simultaneously for dynamic iron unit does not almost affect, and meets the sense of hearing demand of consumer.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of the present utility model, comprise yoke, magnet, induction coil and balanced armature, also comprise suppression coil, described balanced armature is through the centre of yoke, described magnet is symmetricly set in the both sides of balanced armature, and is fixed on yoke; Described induction coil is arranged at one end of balanced armature, and described suppression coil is arranged at the other end of balanced armature; Or described suppression coil is arranged between yoke and induction coil; Or described suppression coil is arranged at the rear end of induction coil; Described suppression coil produces the induced field contrary with induction coil direction.
Further, described suppression coil is connected with induction coil, and rotation direction is contrary.
Further, described suppression coil is identical with the rotation direction of induction coil, and the sense of current is contrary.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with existing known technology, has following remarkable result:
A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of the present utility model, when low frequency, utilize the magnetic flux density suppressed on coil change balanced armature, restrained effectively the distortion of dynamic iron unit in low-frequency range, improve the analytic ability to bass, thus improve the bass performance of dynamic iron unit; Medium, high frequency advantage simultaneously for dynamic iron unit does not almost affect, and meets the sense of hearing demand of consumer.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation reducing the dynamic iron unit magnetic driving mechanism of low-frequency distortion of the utility model embodiment 1;
Fig. 2 is a kind of structural representation reducing the dynamic iron unit magnetic driving mechanism of low-frequency distortion of the utility model embodiment 2;
Fig. 3 is a kind of structural representation reducing the dynamic iron unit magnetic driving mechanism of low-frequency distortion of the utility model embodiment 3;
Fig. 4 is distortion and the frequency response curve figure of the dynamic iron unit of existing structure.
Label declaration in schematic diagram:
1, yoke; 2, magnet; 3, induction coil; 4, balanced armature; 5, conductive bar; 6, coil is suppressed.
Embodiment
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Shown in composition graphs 1, a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of the present embodiment, comprise yoke 1, magnet 2, induction coil 3, balanced armature 4 and suppress coil 6, balanced armature 4 is through the centre of yoke 1, and yoke 1 is stretched out at two ends, and magnet 2 is symmetricly set in the both sides of balanced armature 4, and be fixed on yoke 1, in order to avoid leakage field, the magnet 2 in the present embodiment is fixed on the inner side of yoke 1, and its fixed form can adopt splicing or laser welding; Induction coil 3 is arranged at one end of balanced armature 4, suppresses coil 6 to be arranged at the other end of balanced armature 4, and induction coil 3 and suppression coil 6 glued joint fixing respectively with yoke 1, suppress the number of turn of coil 6 to be less than the number of turn of induction coil 3; Balanced armature 4 is connected with conductive bar 5 away from one end of induction coil 3, for connecting vibrating diaphragm, by the conduct vibrations of balanced armature 4 to vibrating diaphragm; Suppress coil 6 to produce the induced field contrary with induction coil 3 direction, following two kinds of modes specifically can be adopted to realize: suppress coil 6 to be connected with induction coil 3, namely the sense of current is identical, and rotation direction is contrary; Or suppress coil 6 identical with the rotation direction of induction coil 3, the sense of current is contrary.
Embodiment 2
Shown in composition graphs 2, a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of the present embodiment, comprise yoke 1, magnet 2, induction coil 3, balanced armature 4 and suppress coil 6, balanced armature 4 is through the centre of yoke 1, and yoke 1 is stretched out at two ends, and magnet 2 is symmetricly set in the both sides of balanced armature 4, and be fixed on yoke 1, in order to avoid leakage field, the magnet 2 in the present embodiment is fixed on the inner side of yoke 1, and its fixed form can adopt splicing or laser welding; Induction coil 3 is arranged at one end of balanced armature 4, suppresses coil 6 to be arranged between yoke 1 and induction coil 3, and it is fixing to suppress coil 6 to glued joint with induction coil 3, yoke 1 respectively, suppresses the number of turn of coil 6 to be less than the number of turn of induction coil 3; Balanced armature 4 is connected with conductive bar 5 away from one end of induction coil 3, for connecting vibrating diaphragm, by the conduct vibrations of balanced armature 4 to vibrating diaphragm; Suppress coil 6 to produce the induced field contrary with induction coil 3 direction, following two kinds of modes specifically can be adopted to realize: suppress coil 6 to be connected with induction coil 3, namely the sense of current is identical, and rotation direction is contrary; Or suppress coil 6 identical with the rotation direction of induction coil 3, the sense of current is contrary.
Embodiment 3
Shown in composition graphs 3, a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of the present embodiment, comprise yoke 1, magnet 2, induction coil 3, balanced armature 4 and suppress coil 6, balanced armature 4 is through the centre of yoke 1, and yoke 1 is stretched out at two ends, and magnet 2 is symmetricly set in the both sides of balanced armature 4, and be fixed on yoke 1, in order to avoid leakage field, the magnet 2 in the present embodiment is fixed on the inner side of yoke 1, and its fixed form can adopt splicing or laser welding; Induction coil 3 is arranged at one end of balanced armature 4, suppresses coil 6 to be arranged at the rear end of induction coil 3, and induction coil 3 respectively with yoke 1, suppresses coil 6 to glued joint to fix, the number of turn of suppression coil 6 is less than the number of turn of induction coil 3; Balanced armature 4 is connected with conductive bar 5 away from one end of induction coil 3, for connecting vibrating diaphragm, by the conduct vibrations of balanced armature 4 to vibrating diaphragm; Suppress coil 6 to produce the induced field contrary with induction coil 3 direction, following two kinds of modes specifically can be adopted to realize: suppress coil 6 to be connected with induction coil 3, namely the sense of current is identical, and rotation direction is contrary; Or suppress coil 6 identical with the rotation direction of induction coil 3, the sense of current is contrary.
A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion of above-described embodiment 1 ~ 3, when low frequency, utilize and suppress coil 6 to produce the magnetic field contrary with induction coil 3 direction, reduce the magnetic flux density on balanced armature 4, make in the frequency range of about 1000Hz, the peak value of distortion curve reduces effectively, inhibits dynamic iron unit in the distortion of low-frequency range, improve the analytic ability to bass, thus improve the bass performance of dynamic iron unit; Medium, high frequency advantage simultaneously for dynamic iron unit does not almost affect, and meets the sense of hearing demand of consumer.
Below be schematically described the utility model and execution mode thereof, this description does not have restricted, and shown in accompanying drawing is also one of execution mode of the present utility model, and actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, without creatively designing the frame mode similar to this technical scheme and embodiment, protection range of the present utility model all should be belonged to.
Claims (3)
1. one kind reduces the dynamic iron unit magnetic driving mechanism of low-frequency distortion, comprise yoke (1), magnet (2), induction coil (3) and balanced armature (4), it is characterized in that: also comprise and suppress coil (6), described balanced armature (4) is through the centre of yoke (1), described magnet (2) is symmetricly set in the both sides of balanced armature (4), and is fixed on yoke (1); Described induction coil (3) is arranged at one end of balanced armature (4), and described suppression coil (6) is arranged at the other end of balanced armature (4); Or described suppression coil (6) is arranged between yoke (1) and induction coil (3); Or described suppression coil (6) is arranged at the rear end of induction coil (3); Described suppression coil (6) produces the induced field contrary with induction coil (3) direction.
2. a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion according to claim 1, is characterized in that: described suppression coil (6) is connected with induction coil (3), and rotation direction is contrary.
3. a kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion according to claim 1, is characterized in that: described suppression coil (6) is identical with the rotation direction of induction coil (3), and the sense of current is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649692.8U CN204168486U (en) | 2014-11-03 | 2014-11-03 | A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649692.8U CN204168486U (en) | 2014-11-03 | 2014-11-03 | A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168486U true CN204168486U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420649692.8U Withdrawn - After Issue CN204168486U (en) | 2014-11-03 | 2014-11-03 | A kind of dynamic iron unit magnetic driving mechanism reducing low-frequency distortion |
Country Status (1)
| Country | Link |
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| CN (1) | CN204168486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301847A (en) * | 2014-11-03 | 2015-01-21 | 常州阿木奇声学科技有限公司 | Moving iron unit magnetic drive mechanism capable of reducing low-frequency distortion |
-
2014
- 2014-11-03 CN CN201420649692.8U patent/CN204168486U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301847A (en) * | 2014-11-03 | 2015-01-21 | 常州阿木奇声学科技有限公司 | Moving iron unit magnetic drive mechanism capable of reducing low-frequency distortion |
| CN104301847B (en) * | 2014-11-03 | 2017-11-28 | 常州阿木奇声学科技有限公司 | A kind of dynamic iron unit magnetic driving mechanism for reducing low-frequency distortion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150218 Effective date of abandoning: 20171128 |
|
| AV01 | Patent right actively abandoned |