CN206490821U - A kind of magnetic structure - Google Patents
A kind of magnetic structure Download PDFInfo
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- CN206490821U CN206490821U CN201720012501.0U CN201720012501U CN206490821U CN 206490821 U CN206490821 U CN 206490821U CN 201720012501 U CN201720012501 U CN 201720012501U CN 206490821 U CN206490821 U CN 206490821U
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- magnetic
- magnet steel
- conductive board
- iron
- main magnet
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Abstract
The utility model discloses a kind of magnetic structure, it is related to magnetic Circuit Design field.The magnetic structure includes U iron, magnet steel and magnetic conductive board, the magnet steel is arranged on inside U iron with the magnetic conductive board, wherein, the magnet steel includes main magnet steel and secondary magnet steel, the magnetic conductive board includes leading magnetic sheet and secondary magnetic conductive board, the main magnet steel, leading magnetic sheet, secondary magnet steel, secondary magnetic conductive board are sequentially connected, and the main magnet steel is fixedly connected with the U iron bottom；The magnetic structure provided based on the utility model embodiment, can increase magnetic flux density, reduce magnetic leakage, when the magnetic structure is applied to loudspeaker, can be effectively improved the non-linear distortion of loudspeaker so that loudspeaker operationally, is played tonequality and got a promotion.
Description
Technical field
The utility model embodiment is related to magnetic Circuit Design field, and in particular to a kind of magnetic structure.
Background technology
In recent years, portable loudspeaker box is gradually prevailing, and general portable loudspeaker box is in order to which its portable characteristic is, it is necessary to profile
Structure is limited, so general common audio amplifier is largely small-bore powerful design, and in the entirety knot of loudspeaker
In structure, the design of magnetic circuit is vital, magnetic structure in existing loudspeaker on tonequality influence, typically there is two kinds of magnetic
Line structure, one kind is to include a upper magnet yoke and a lower yoke, and a permanent magnetism is then set in the middle of upper magnet yoke and lower yoke
Body, the air gap formed in the upper magnet yoke, lower yoke, permanent magnet and pole piece is provided with one and can slide up and down voice coil loudspeaker voice coil；It is another
Plant is that one piece of permanent magnet and corresponding magnetic conductive board, the magnetic of the magnetic structure of these types are provided with T iron (electrician's iron)
Flux density is smaller, easily produces harmonic distortion, and good result of broadcast can not be reached using the loudspeaker of this kind of magnetic structure.
Utility model content
The purpose of this utility model is for technical problem present in prior art there is provided a kind of magnetic structure, uses
In solve loudspeaker magnetic flux density it is low, it is easy generation harmonic distortion the problem of.
To solve posed problems above, the technical scheme that the utility model is provided includes herein below：
The utility model embodiment provides a kind of magnetic structure, including U iron, magnet steel and magnetic conductive board, the magnet steel with it is described
Magnetic conductive board is arranged on inside U iron, wherein, the magnet steel includes main magnet steel and secondary magnet steel, the magnetic conductive board include leading magnetic sheet with
Secondary magnetic conductive board, the main magnet steel, leading magnetic sheet, secondary magnet steel, secondary magnetic conductive board are sequentially connected, the main magnet steel and the U iron bottom
It is fixedly connected.
Further, the main magnet steel, leading magnetic sheet, secondary magnet steel and secondary magnetic conductive board are cylindrical.
Further, the cross-sectional diameter of the leading magnetic sheet and secondary magnetic conductive board is more than the horizontal stroke of the main magnet steel and secondary magnet steel
Diameter of section.
Further, the main magnet steel with described to project through glue Nian Jie.
Further, it is bonded between the main magnet steel that is sequentially connected, leading magnetic sheet, secondary magnet steel, secondary magnetic conductive board by glue.
The magnetic structure that the utility model embodiment is provided has the advantages that：
By increasing secondary magnet steel and secondary magnetic conductive board so that original magnetic structure is changed into this magnetic structure, using this magnetic circuit
Structure can reduce magnetic leakage phenomenon, increase magnetic flux density so that magnetic field high quality in magnetic circuit, the lifting of BL (magnetic force) value, pass through this magnetic
The symmetry of line structure, can be effectively improved the harmonic distortion of loudspeaker, reduce the non-linear distortion of loudspeaker, raised one's voice so as to improve
Tonequality when device works, improves the play quality of loudspeaker.
Brief description of the drawings
The profile for the magnetic structure that Fig. 1 provides for the utility model embodiment；
Accompanying drawing identifier declaration：1-U iron, 2-magnet steel, 21-main magnet steel, 22-secondary magnet steel, 3-magnetic conductive board, 31-are leading
Magnetic sheet, 32-pair magnetic conductive board, 4-magnetic gap.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, a kind of magnetic structure provided by the utility model embodiment, including U iron 1, magnet steel 2 and lead
Magnetic sheet 3, wherein, the magnet steel 2 and magnetic conductive board 3 are arranged on inside the U iron, and the magnet steel 2 includes main magnet steel 21 and secondary magnet steel
22, the magnetic conductive board includes leading magnetic sheet 31 and secondary magnetic conductive board 32, and the main magnet steel 21 is fixedly connected with the bottom of U iron 1,
The main magnet steel 21, leading magnetic sheet 31, secondary magnet steel 22, secondary magnetic conductive board 32 are fixedly connected sequentially from bottom to up.Optionally, the U
Iron 1 is fixed with main magnet steel 21 by glue, in other embodiment of the present utility model, can be according to specific needs using difference
Fixed form.
As the alternative of the utility model embodiment, the main magnet steel 21, leading magnetic sheet 31, secondary magnet steel 22 and pair are led
Magnetic sheet 32 is all cylinder, in the present embodiment, the main magnet steel 21, leading magnetic sheet 31, secondary magnet steel 22 and secondary magnetic conductive board 32
Cross-sectional diameter is respectively less than the diameter of the bottom of U iron 1, optionally, the cross section of the leading magnetic sheet 31 and secondary magnetic conductive board 32
Product is slightly larger than the main magnet steel 21 and the cross-sectional area of secondary magnet steel 22；Specifically, the cross-sectional area of leading magnetic sheet 31 is slightly larger than
The main cross-sectional area of magnet steel 21, the cross-sectional area of the secondary magnetic conductive board 32 is slightly larger than the cross-sectional area of secondary magnet steel 22；Optionally, it is described
The shape size of main magnet steel 21 is as the secondary shape size of magnet steel 22, and the leading thickness of magnetic sheet 31 is less than the main magnet steel
21 thickness, the secondary thickness of magnetic conductive board 32 is less than secondary magnet steel 22, and its thickness is less than leading magnetic sheet 31.
Alternatively, it is solid by glue between the main magnet steel 21, leading magnetic sheet 31, secondary magnet steel 22 and secondary magnetic conductive board 32
It is fixed, in other embodiment of the present utility model, different fixed forms can be used according to specific needs.
As the alternative of the present embodiment, the U iron 1 is cylinder, optionally, the inside bottom middle area of U iron 1
Domain is provided with projection, and the projection is mainly used in avoiding the generation of voice coil loudspeaker voice coil bottoming；It is described it is raised be connected with main magnet steel 21, it is described
Raised width is slightly less than the bottom width of U iron 1, optionally, and the exterior bottom of U iron 1 sets fluted, the groove it is recessed
Sunken width is slightly less than the raised width, optionally, and the raised and groove part is trapezoidal shape.
Optionally, in preferred embodiment of the present utility model, the projection is set to rectangular shape.
In the utility model embodiment, the main magnet steel 21, leading magnetic sheet 31, secondary magnet steel 22 and secondary magnetic conductive board 32 connect successively
Connect and magnetic gap 4 is formed between formed cylinder and U iron 1, the main magnet steel 21 and leading magnetic sheet 31 and U iron 1 the formation magnetic
Gap loop, the secondary magnet steel 22 forms loop with the secondary magnetic conductive board 32 in magnetic gap 4, and the spuious magnetic line of force is concentrated into loop
In, leakage field is reduced, and then BL (magnetic force) value of magnetic flux density is added, magnetic induction line in magnetic field is more concentrated, be more evenly distributed.
By increasing secondary magnet steel and secondary magnetic conductive board in the utility model embodiment so that original magnetic structure is changed into this magnetic
Line structure, can reduce magnetic leakage phenomenon, increase magnetic flux density so that magnetic field high quality in magnetic circuit, the lifting of BL (magnetic force) value；By this
The symmetry of magnetic structure, can be effectively improved the harmonic distortion of the loudspeaker using the magnetic structure, reduce the non-of loudspeaker
Linear distortion, so that tonequality when improving speaker operation, improves the play quality of loudspeaker.
The utility model embodiment also provides a kind of loudspeaker, and the loudspeaker includes the magnetic circuit knot described in above-described embodiment
Structure, and possess all technical characteristic described in above-described embodiment and technique effect.
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 of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes 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 for the common skill of 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
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (7)
1. a kind of magnetic structure, it is characterised in that including U iron (1), magnet steel (2) and magnetic conductive board (3), the magnet steel (2) with it is described
Magnetic conductive board (3) is arranged on U iron (1) inside, wherein, the magnet steel (2) includes main magnet steel (21) and secondary magnet steel (22), the magnetic conduction
Plate (3) includes leading magnetic sheet (31) and secondary magnetic conductive board (32), the main magnet steel (21), leading magnetic sheet (31), secondary magnet steel (22), pair
Magnetic conductive board (32) is sequentially connected, and the main magnet steel (21) is fixedly connected with U iron (1) bottom.
2. magnetic structure according to claim 1, it is characterised in that the main magnet steel (21), leading magnetic sheet (31), secondary magnetic
Steel (22) and secondary magnetic conductive board (32) are cylindrical.
3. magnetic structure according to claim 2, it is characterised in that the leading magnetic sheet (31) and secondary magnetic conductive board (32)
Cross-sectional area is more than the cross-sectional area of the main magnet steel (21) and secondary magnet steel (22).
4. magnetic structure according to claim 1, it is characterised in that U iron (1) the inside bottom intermediate region is provided with
Magnetic gap (4) is formed between projection, described raised and U iron (1) inwall.
5. magnetic structure according to claim 4, it is characterised in that the main magnet steel (21) projects through glue with described
Bonding.
6. magnetic structure according to claim 1, it is characterised in that U iron (1) exterior bottom sets fluted.
7. the magnetic structure according to any one of claim 1~6, it is characterised in that the main magnet steel being sequentially connected
(21), dominate and be bonded between magnetic sheet (31), secondary magnet steel (22), secondary magnetic conductive board (32) by glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720012501.0U CN206490821U (en) | 2017-01-05 | 2017-01-05 | A kind of magnetic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720012501.0U CN206490821U (en) | 2017-01-05 | 2017-01-05 | A kind of magnetic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490821U true CN206490821U (en) | 2017-09-12 |
Family
ID=59771367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720012501.0U Active CN206490821U (en) | 2017-01-05 | 2017-01-05 | A kind of magnetic structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206490821U (en) |
-
2017
- 2017-01-05 CN CN201720012501.0U patent/CN206490821U/en active Active
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