CN207340175U - A kind of magnetic structure - Google Patents
A kind of magnetic structure Download PDFInfo
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- CN207340175U CN207340175U CN201721072641.3U CN201721072641U CN207340175U CN 207340175 U CN207340175 U CN 207340175U CN 201721072641 U CN201721072641 U CN 201721072641U CN 207340175 U CN207340175 U CN 207340175U
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- magnet steel
- washer
- magnetic
- magnetic structure
- iron
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Abstract
The utility model discloses a kind of magnetic structure, relate to magnetic Circuit Design field, including U iron, magnet steel and washer, and the washer, the magnet steel are from top to bottom connected to the inside of the U iron in turn；The top surface of the washer is machined with a groove, and the magnetic structure further includes secondary magnet steel, and the pair magnet steel is arranged on the inside of the groove.Magnetic structure described in the present embodiment improves the magnetic flux of whole magnetic structure, adds magnetic flux density, reduce the leakage field between the U iron and the magnet steel so that magnetic field high quality in magnetic structure by setting the secondary magnet steel in the washer；Moreover, the present embodiment increase secondary magnet steel, can improve the harmonic distortion of loudspeaker, reduce the non-linear distortion of loudspeaker, so that tonequality when improving speaker operation, the play quality of loudspeaker is improved.
Description
Technical field
Magnetic Circuit Design field is the utility model is related to, more particularly to a kind of magnetic structure.
Background technology
As the demand in scientific and technological progress and market is continuously improved, loudspeaker uses generally, most in daily life
Common application form is to coordinate device for image in the form of into system to meet the entertainment demand of broad masses of the people.People wish
Prestige can hear the sound of high-fidelity at the same time when watching high definition picture, and it is to raise to determine the excellent important component of loudspeaker tonequality
Magnetic structure inside sound device.
At present, traditional magnetic structure includes U iron 1, washer 2 and magnet steel 3, the magnetic circuit knot of these types (with reference to Fig. 1)
The leakage field of structure is larger, easily produces harmonic distortion, and the distribution of its magnetic line of force is as shown in Figure 2 (wherein, it is illustrated that dotted portion is raised for tradition
The magnetic line of force distribution of sound device magnetic structure right half part), good broadcasting cannot be reached using the loudspeaker of this kind of magnetic structure
Effect.Therefore, current loudspeaker need to increase main magnet steel, the thickness of secondary magnet steel, and to reduce leakage field, otherwise its magnetic flux will be difficult to
Improve, loudspeaker distortions are serious.But main magnet steel, the thickness of secondary magnet steel are added, and magnetic circuit of loudspeaker thickness will be caused to increase
Add, it is difficult to the product that shape is small, thickness is thin is obtained, can not meet demand.
Utility model content
The purpose of this utility model is that it is directed to technical problem existing in the prior art, there is provided a kind of magnetic structure, mainly
Solve the problems, such as that the magnetic flux of traditional magnetic structure is small and distortion is serious.
In order to solve posed problems above, the technical solution adopted in the utility model is：
The utility model provides a kind of magnetic structure, including U iron, magnet steel and washer, the washer, the magnet steel
From top to bottom it is connected to the inside of the U iron in turn, the magnetic structure further includes secondary magnet steel；
The top surface of the washer is machined with a groove, and the pair magnet steel is arranged on the inside of the groove, the pair magnet steel
Top surface be less than the groove notch.
As further improvement of the utility model, between the sequentially connected washer, the magnet steel, the U iron with
And fixed between the secondary magnet steel and the washer by bonding agent.
As further improvement of the utility model, the U iron, the magnet steel, the washer and the secondary magnet steel are equal
Cross-sectional diameter for cylindrical, and the magnet steel, the washer and the secondary magnet steel is less than the straight of the U iron bottom
Footpath.
As further improvement of the utility model, the cross-sectional diameter of the washer is straight more than the cross section of the magnet steel
Footpath, the cross-sectional diameter of the pair magnet steel are less than the cross-sectional diameter of the washer.
As further improvement of the utility model, the thickness of the washer is more than the thickness of the magnet steel.
As further improvement of the utility model, the groove is specially U-lag or V-shaped groove.
Compared with prior art, the beneficial effects of the utility model are：
In the embodiment of the utility model, the magnetic structure is carried by setting the secondary magnet steel in the washer
The magnetic flux of high whole magnetic structure, adds magnetic flux density, reduces the leakage field between the U iron and the magnet steel so that magnetic
Magnetic field high quality in line structure；Moreover, the present embodiment increase secondary magnet steel, can improve the harmonic distortion of loudspeaker, reduction is raised
The non-linear distortion of sound device, so that tonequality when improving speaker operation, improves the play quality of loudspeaker.
Brief description of the drawings
Fig. 1 is the structure diagram of traditional magnetic structure；
Fig. 2 is the distribution diagram of magnetic line of force of traditional magnetic structure right half part；
Fig. 3 is the structure diagram of the magnetic structure described in the utility model embodiment；
Fig. 4 is the distribution diagram of magnetic line of force of the magnetic structure right half part described in the utility model embodiment；
Fig. 5 is the structure diagram of the magnetic structure described in another embodiment of the utility model.
Reference numeral：100-U iron；200- magnet steel；300- washers；310- grooves；400- pair magnet steel.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in fact in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is the public affairs made to the utility model
Open the understanding more thorough and comprehensive of content.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood implication of technical staff in domain is identical.It is simply in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
With reference to shown in Fig. 3, for the structure diagram of magnetic structure described in the utility model embodiment, including U iron 100, magnetic
Steel 200, washer 300 and secondary magnet steel 400, the washer 300, the magnet steel 200 are from top to bottom connected to the U iron in turn
100 inside, the magnet steel 200 are used for the magnetic force energy for providing whole magnetic structure, and the washer 300 is used to conduct magnetic energy
Amount, and provide uniform magnetic field for whole magnetic structure；The top surface of the washer 300 is machined with a groove 310, the pair magnet steel
400 are fixed at the inside of the groove 310；In the embodiment of the utility model, the groove 310 is U-lag, described
The top surface of secondary magnet steel 400 is less than the notch of the groove 310, and the secondary magnet steel 400 is consolidated with the washer 300 by bonding agent
It is fixed；In addition, between the sequentially connected washer 300, the magnet steel 200, the U iron 100 and the secondary magnet steel 400 and institute
State and fixed by bonding agent between washer 300；, can be according to specific needs using not in the other embodiment of the utility model
Same fixed form.
In the embodiment of the utility model, the top surface of the washer 300 is for placing the groove of the secondary magnet steel 400 not
It is limited to the shape of U-lag, as shown in figure 5, the top surface of the washer 300 can be processed into V-shaped groove, and ensures the washer 300
The peak of both ends protrusion is higher than the top surface of the secondary magnet steel 400, and the concrete shape of the groove 310 can be according to actual need
Ask and specifically design its gradient and depth, be defined in the present embodiment not to this.
In the embodiment of the utility model, if the pair magnet steel 400 is less than the notch of the groove 310, it can make whole
The thickness of a magnetic structure is thinner, also can linearly reduce the leakage field between the U iron 100 and the magnet steel 200；If the pair magnetic
When steel 400 is higher than the notch of the groove 310, the pair magnet steel 400 can not play the role of linearly reducing leakage field, so that
Harmonic distortion is produced, prevents loudspeaker from reaching good result of broadcast；In addition, secondary magnet steel 400 described in the present embodiment exists
Ensure under sufficiently thin requirement, can secondary magnet steel 400 described in designed, designed according to demand size, such as：The length of the pair magnet steel 400
Degree, height etc..
In the embodiment of the utility model, the magnetic line of force is visually to describe the feature of Distribution of Magnetic Field, and the magnetic line of force
It is the closed curve of artefact, and the magnetic line of force in somewhere is more intensive, the magnetic field characterized herein is stronger, correspondingly, the magnetic at this
Flux and magnetic flux density are then bigger；With reference to shown in Fig. 4, dotted portion is magnetic structure described in the utility model embodiment in figure
The magnetic line of force of right half part, after the present embodiment adds the secondary magnet steel 400, makes the magnetic line of force of whole magnetic structure increase, i.e., whole
The magnetic line of force of a magnetic structure more crypto set, so as to increase the magnetic flux and magnetic flux density of whole magnetic structure；According in Fig. 2
Obtained after the distribution map integration of the magnetic line of force：(wherein, Bn is magnetic flux density to Bn=0.6746T, and T is tesla, is magnetic flux density
Unit), and obtained after the distribution map integration according to the magnetic line of force in Fig. 4：Bn=0.712T, i.e., using the magnetic circuit described in the present embodiment
After structure, on the premise of magnetic circuit height is not increased, Bn values improve 5.5%, so that applied to the present embodiment magnetic structure
The sensitivity of loudspeaker will improve 0.5dB.
In the embodiment of the utility model, the U iron 100, the magnet steel 200, the washer 300 and the secondary magnetic
Steel 400 is that the cross-sectional diameter of cylindrical and the magnet steel 200, the washer 300 and the secondary magnet steel 400 is less than
The diameter of 100 bottom of U iron, avoids influencing the magnetic gap formed between the U iron 100 and the magnet steel 200, and the secondary magnet steel
400 can improve the magnetic flux of whole magnetic structure, add magnetic flux density, reduce between the U iron 100 and the magnet steel 200
Leakage field so that magnetic field high quality in magnetic structure；Moreover, the increase secondary magnet steel 400, the harmonic wave that can improve loudspeaker lose
Very, the non-linear distortion of loudspeaker is reduced, so that tonequality when improving speaker operation, improves the play quality of loudspeaker；Tool
Body, the cross-sectional diameter of washer 300 described in the present embodiment is more than the cross-sectional diameter of the magnet steel 200, the pair magnet steel
400 cross-sectional diameter is less than the cross-sectional diameter of the washer 300；In addition, the thickness of the washer 300 is more than the magnet steel
200 thickness, so that the magnetic force energy amount of the magnet steel 200 focuses between the U iron 100 and the magnet steel 200 magnetic gap formed
In, so that stronger magnetic field is produced in the magnetic gap, even if applied to the voice coil loudspeaker voice coil in the loudspeaker of the present embodiment magnetic structure
Winding is in the center of the magnetic gap；In the other embodiment of the utility model, the U iron 100, the magnet steel 200, the China
Department 300 and the secondary magnet steel 400 can be processed into other arbitrary shapes according to actual demand, in the present embodiment not
This is defined.
In the embodiment of the utility model, the magnetic structure in the washer 300 by setting the secondary magnet steel
400, the magnetic flux of whole magnetic structure is improved, adds magnetic flux density, is reduced between the U iron 100 and the magnet steel 200
Leakage field so that magnetic field high quality in magnetic structure；Moreover, the present embodiment increase secondary magnet steel 400, can improve the humorous of loudspeaker
Wave distortion, reduces the non-linear distortion of loudspeaker, so that tonequality when improving speaker operation, improves the broadcasting matter of loudspeaker
Amount.
In the present embodiment, those skilled in the art will be appreciated that term " comprising ", "comprising" or its it is any its
He is intended to non-exclusive inclusion by variation, except comprising those listed key elements, but also can include and be not explicitly listed
Other element.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply each technical characteristic in example it is all can with combination be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the utility model, its description is more specific and detailed,
But simultaneously therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (6)
1. a kind of magnetic structure, including U iron, magnet steel and washer, the washer, the magnet steel are from top to bottom connected to institute in turn
State the inside of U iron, it is characterised in that：The magnetic structure further includes secondary magnet steel；
The top surface of the washer is machined with a groove, and the pair magnet steel is fixed at the inside of the groove, the pair magnet steel
Top surface be less than the groove notch.
2. magnetic structure according to claim 1, it is characterised in that：It is the sequentially connected washer, the magnet steel, described
Fixed between U iron and between the secondary magnet steel and the washer by bonding agent.
3. magnetic structure according to claim 1, it is characterised in that：The U iron, the magnet steel, the washer and institute
It is cylindrical to state secondary magnet steel, and the cross-sectional diameter of the magnet steel, the washer and the secondary magnet steel is less than the U iron
The diameter of bottom.
4. magnetic structure according to claim 1, it is characterised in that：The cross-sectional diameter of the washer is more than the magnet steel
Cross-sectional diameter, it is described pair magnet steel cross-sectional diameter be less than the washer cross-sectional diameter.
5. magnetic structure according to claim 1, it is characterised in that：The thickness of the washer is more than the thickness of the magnet steel
Degree.
6. magnetic structure according to claim 1, it is characterised in that：The groove is specially U-lag or V-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072641.3U CN207340175U (en) | 2017-08-25 | 2017-08-25 | A kind of magnetic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072641.3U CN207340175U (en) | 2017-08-25 | 2017-08-25 | A kind of magnetic structure |
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| Publication Number | Publication Date |
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| CN207340175U true CN207340175U (en) | 2018-05-08 |
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| CN201721072641.3U Active CN207340175U (en) | 2017-08-25 | 2017-08-25 | A kind of magnetic structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261559A (en) * | 2020-12-21 | 2021-01-22 | 常州诚铭电子科技有限公司 | Loudspeaker |
-
2017
- 2017-08-25 CN CN201721072641.3U patent/CN207340175U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261559A (en) * | 2020-12-21 | 2021-01-22 | 常州诚铭电子科技有限公司 | Loudspeaker |
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