CN206575592U - Magnetic circuit system and the electro-acoustic element using the magnetic circuit system - Google Patents
Magnetic circuit system and the electro-acoustic element using the magnetic circuit system Download PDFInfo
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- CN206575592U CN206575592U CN201720166652.1U CN201720166652U CN206575592U CN 206575592 U CN206575592 U CN 206575592U CN 201720166652 U CN201720166652 U CN 201720166652U CN 206575592 U CN206575592 U CN 206575592U
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- magnet steel
- voice coil
- circuit system
- magnetic circuit
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Abstract
The utility model provides a kind of magnetic circuit system and the electro-acoustic element using the magnetic circuit system, the magnetic circuit system includes magnetic cup and the magnet steel and pole plate that are sticked successively on magnetic cup, the magnetic cup includes the lower surface away from the magnet steel and the upper surface being oppositely arranged with the lower surface, the upper surface is provided with the groove being recessed towards the lower surface, the width of the groove is more than the width of the magnet steel, the magnet steel is fitted in the groove, the surrounding of the magnetic cup extends vertically upwards out extension, magnetic gap is formed between the pole plate and the magnet steel and the extension, the magnetic gap is used to accommodate voice coil loudspeaker voice coil.The utility model is when glue quantity is excessive, and the glue of spilling can only enter in the groove, so as to effectively prevent the glue of bonding magnetic cup and magnet steel from overflowing into magnetic gap, it is to avoid the problem of tonequality is bad because of caused by excessive glue, improves the reliability of product.In addition, the utility model can increase magnetic flux, be conducive to being lifted the magnetic property of product.
Description
Technical field
The utility model is related to acoustic equipment technical field, more particularly to a kind of magnetic circuit system and use the magnetic circuit system
Electro-acoustic element.
Background technology
The mobile terminal equipment staging such as mobile phone, tablet personal computer frequency is accelerated in recent years, and user is to applied to mobile whole
The requirement of the electroacoustic performance of electro-acoustic element in end equipment is also accordingly improved.With gradually carrying for electro-acoustic element power at this stage
Rise, higher requirement will certainly be proposed to the reliability of electro-acoustic element, performance is good, and the high product of reliability surely wins consumer
Favor.
Referring to Fig. 6, the magnetic circuit system in electro-acoustic element of the prior art is by magnetic cup 601, the magnetic on magnetic cup 601
Steel 602 and the pole plate 603 on magnet steel 602 are constituted.
In the prior art, the upper surface of magnet steel 602 and magnetic cup 601 is directly glued, magnet steel 602 and the glued face of magnetic cup 601
It is plane, especially by the mode of injecting glue that magnet steel 602 and magnetic cup 601 is glued together, if glue quantity is very few, bonding force is too
It is small, when doing reliability test especially fall-down test, magnet steel 602 and magnetic cup 601 often the two separate, directly result in electroacoustic
Device can not send sound, and current solution is increase glue quantity, but glue quantity is excessive, and glue can overflow into magnet steel
In 602 magnetic gap 604 formed with magnetic cup 601, when electro-acoustic element works, the glue after voice coil loudspeaker voice coil collision is dry and hard causes zund-Burguet apparatus
Part tonequality is bad, so as to influence the acoustical behavior of product.
Utility model content
In view of above-mentioned condition, it is necessary to provide a kind of magnetic circuit system and the electro-acoustic element using the magnetic circuit system, glue is solved
When water consumption is excessive, the problem of tonequality is bad because of caused by excessive glue.
One side of the present utility model provides a kind of magnetic circuit system, including magnetic cup and the magnetic being sticked successively on the magnetic glass
Steel and pole plate, the magnetic cup include the lower surface away from the magnet steel and the upper surface being oppositely arranged with the lower surface, described
Upper surface is provided with the groove being recessed towards the lower surface, and the width of the groove is more than the width of the magnet steel, the magnet steel
Be fitted in the groove, the surrounding of magnetic cup extends vertically upwards out extension, the pole plate and the magnet steel with it is described
Magnetic gap is formed between extension, the magnetic gap is used to accommodate voice coil loudspeaker voice coil.
In above-mentioned magnetic circuit system, by setting the groove of surface indentation down on the upper surface of magnetic cup, magnet steel is fitted in
In the groove, and width of the width more than the magnet steel of the groove, therefore when glue quantity is excessive, the glue of spilling
It can only enter in the groove, so as to effectively prevent the glue of bonding magnetic cup and magnet steel from overflowing into magnetic gap, it is to avoid draw because of excessive glue
The problem of tonequality risen is bad, improves the reliability of product.In addition, compared to the product of equal height in the prior art, leading to
Setting groove is crossed, the volume of magnet steel can be accordingly increased, so as to increase the magnetic flux of electro-acoustic element magnetic circuit system, is conducive to carrying
Rise the magnetic property of product.
In addition, the utility model proposes magnetic circuit system, can also have technical characteristic additional as follows：
Further, the groove includes binding face and the side wall upwardly extended along the binding face, the magnet steel laminating
On the binding face.
Further, the binding face extends vertically upwards out the side wall or the binding face tilts upward and extends institute
State side wall.
Further, the side wall is in cambered surface.
Further, the shape of the pole plate, size and number are identical with the magnet steel, and the thickness of the pole plate is small
In the thickness of the magnet steel.
Further, the rounded rectangle of the magnet steel.
Another aspect of the present utility model provides a kind of electro-acoustic element, including above-mentioned magnetic circuit system.
In addition, the utility model proposes electro-acoustic element, can also have technical characteristic additional as follows：
Further, the electro-acoustic element also includes support and the vibrational system being housed in the support, the magnetic circuit
System is housed in the support, and the vibrational system includes vibrating diaphragm and voice coil loudspeaker voice coil, and the voice coil loudspeaker voice coil is glued at the following table of the vibrating diaphragm
The central position in face, the voice coil loudspeaker voice coil is inserted in the magnetic gap, and when the voice coil loudspeaker voice coil is passed through AC signal, the voice coil loudspeaker voice coil is by institute
The influence for stating magnetic fields in magnetic gap produces vibration, so as to be vibrated together with driving the vibrating diaphragm glued with the voice coil loudspeaker voice coil.
Further, the electro-acoustic element also includes protecgulum, and the protecgulum is fixed on the bracket.
Brief description of the drawings
The structural representation for the electro-acoustic element that Fig. 1 provides for the utility model first embodiment；
Fig. 2 is the cross section structure schematic diagram of magnetic circuit system in Fig. 1；
Fig. 3 is the cross section structure schematic diagram of magnetic cup in Fig. 2；
Fig. 4 is Fig. 2 centre circles II enlarged diagram；
The cross section structure schematic diagram of magnetic circuit system in the electro-acoustic element that Fig. 5 provides for the utility model second embodiment；
Fig. 6 is the cross section structure schematic diagram of magnetic circuit system in the prior art.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.Some embodiments of the present utility model are given in accompanying drawing.But, this
Utility model can be realized in many different forms, however it is not limited to embodiment described herein.On the contrary, providing these
The purpose of embodiment be make to disclosure of the present utility model more it is thorough comprehensively.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side ", " on ", " under " and similar statement for illustrative purposes only, rather than indicate or implied signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.Term as used herein " and/or " include one or more related Listed Items
Arbitrary and all combination.
Fig. 1, the electro-acoustic element that the utility model first embodiment is provided, including support 10 are refer to, the branch is contained in
Vibrational system 20, magnetic circuit system 30 in frame 10, and it is fixed on the protecgulum 40 of the side of support 10.
The vibrational system 20 includes vibrating diaphragm 201 and voice coil loudspeaker voice coil 202, and the voice coil loudspeaker voice coil 202 is glued at the lower surface of vibrating diaphragm 201
Central position.When being passed through AC signal to electro-acoustic element, whole vibrational system 20 under the driving of magnetic circuit system 30 and
Vibration.
Annularly lid is connected to the edge of the support 10 to the protecgulum 40, and is combined with the upper surface of vibrating diaphragm 201.
Referring to Fig. 2, the magnetic circuit system 30 includes magnetic cup 303 and the magnet steel 302 being sticked on magnetic cup 303, with
And it is attached at the pole plate 301 on the magnet steel 302.In the present embodiment, the rounded rectangle of the magnet steel 302, and magnet steel 302
Quantity is one, and shape, size, the quantity of the pole plate 301 are identical with the magnet steel 302, and the thickness of the pole plate 301 is less than
The thickness of the magnet steel 302, the pole plate 301 is attached on the magnet steel 302.The surrounding of the magnetic cup 303 is prolonged vertically upward
Extension 3030 is stretched out, magnetic gap 304 is formed between the pole plate 301 and the magnet steel 302 and the extension 3032, it is described
Voice coil loudspeaker voice coil 202 is inserted in the magnetic gap 304.When the voice coil loudspeaker voice coil 202 is passed through AC signal, the voice coil loudspeaker voice coil 202 is by magnetic gap 304
The influence of middle magnetic fields produces vibration, so as to drive connected vibrating diaphragm 201 to vibrate together.
Fig. 3 and Fig. 4 is referred to, the magnetic cup 303 includes lower surface 3031 and and lower surface away from the magnet steel 302
3031 upper surfaces 3032 being oppositely arranged, wherein, the upper surface 3032 is provided with the groove being recessed towards the lower surface 3031
3033, the width of the groove 3033 is more than the width of the magnet steel 302 so that the magnet steel 302 can load in groove 3033,
And after loading, the groove 3033 also leaves gap.Glue is injected in the groove 3033, and the magnet steel 302 is attached at
In the groove 3033 of the magnetic cup 303.
Specifically, the groove 3033 includes binding face 30331 and the side wall upwardly extended along the binding face 30331
30332, the magnet steel 302 is fitted on the binding face 30331.When it is implemented, the binding face 30331 can vertically to
On extend the side wall 30332.Furthermore, it is to be understood that, in other embodiments of the present utility model, the binding face
30331 can also tilt upward and extend the side wall 30332, or the side wall 30332 is in the structure of cambered surface.
The electro-acoustic element proposed according to the present embodiment, in magnetic circuit system 30, by the upper surface 3032 of magnetic cup 303
The groove 3033 being recessed towards lower surface 3031 is set, and magnet steel 302 is fitted in the groove 3033, and the width of the groove 3033
Degree is more than the width of the magnet steel 302, therefore when glue quantity is excessive, the glue of spilling can only enter in the groove 3033,
So as to effectively prevent the glue of bonding magnetic cup 303 and magnet steel 302 from overflowing into magnetic gap 304, it is to avoid the tonequality because of caused by excessive glue
Bad the problem of, improve the reliability of product.In addition, simultaneously compared to the product of equal height in the prior art, by setting
Groove 3033 is put, can accordingly increase in the volume of magnet steel 302, i.e. groove 3033 can be with the magnet steel 302 of accommodating portion, and magnetic
Flux number it is proportional with the size of magnet steel 302, so as to increase the magnetic flux of electro-acoustic element magnetic circuit system 30, be conducive to lifting
The magnetic property of product.
It refer to Fig. 5, the electro-acoustic element that the utility model second embodiment is provided, it is essentially identical with first embodiment,
Difference is that in the magnetic circuit system 30a in the electro-acoustic element that the present embodiment is proposed, the number of magnet steel is more than one, specifically
The secondary magnet steel 304a of the main magnet steel 302a, secondary magnet steel 304a and master are uniformly located on including a main magnet steel 302a and four
Magnet steel 302a is spaced a distance, and being sticked respectively on the main magnet steel 302a and secondary magnet steel 304a has the master of same shape size
Formed between pole plate 301a and consequent pole plate 305a, main magnet steel 302a and main pole plate 301a and pair magnet steel 304a and consequent pole plate 305a between magnetic
Gap 306a, voice coil loudspeaker voice coil is inserted in the magnetic gap 306a.In the present embodiment, position relative with main magnet steel 302a magnetic cup 303a is set
There is the first groove 3031a, position relative with secondary magnet steel 304a magnetic cup 303a is provided with the second groove 3032a, and the first groove
3031a width is more than main magnet steel 302a width, and the second groove 3032a width of the width more than secondary magnet steel 304a, from
And ensure in glued operation process, when glue is excessive, excessive glue may not flow into magnetic gap 306a.When the voice coil loudspeaker voice coil is passed through exchange
During signal, the voice coil loudspeaker voice coil by magnetic fields in magnetic gap 306a influenceed produce vibration so that drive connected vibrating diaphragm and
Top dome is vibrated together.It should be understood that in other embodiments, secondary magnet steel 304a number can be not limited to four.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of magnetic circuit system, including magnetic cup and the magnet steel and pole plate that are sticked successively on the magnetic glass, it is characterised in that described
Magnetic cup includes the lower surface away from the magnet steel and the upper surface being oppositely arranged with the lower surface, and the upper surface is provided with court
The groove of the lower surface depression, the width of the groove is more than the width of the magnet steel, and the magnet steel is fitted in the groove
In, the surrounding of the magnetic cup extends vertically upwards out extension, is formed between the pole plate and the magnet steel and the extension
Magnetic gap, the magnetic gap is used to accommodate voice coil loudspeaker voice coil.
2. magnetic circuit system according to claim 1, it is characterised in that the groove includes binding face and along the binding face
The side wall upwardly extended, the magnet steel is fitted on the binding face.
3. magnetic circuit system according to claim 2, it is characterised in that the binding face extends vertically upwards out the side wall
Or the binding face tilts upward and extends the side wall.
4. magnetic circuit system according to claim 2, it is characterised in that the side wall is in cambered surface.
5. magnetic circuit system according to claim 1, it is characterised in that the shape of the pole plate, size and number are and institute
State that magnet steel is identical, and the thickness of the pole plate is less than the thickness of the magnet steel.
6. magnetic circuit system according to claim 1, it is characterised in that the rounded rectangle of magnet steel.
7. a kind of electro-acoustic element, it is characterised in that including the magnetic circuit system described in claim 1 to 6 any one.
8. electro-acoustic element according to claim 7, it is characterised in that the electro-acoustic element also includes support and is housed in institute
The vibrational system in support is stated, the magnetic circuit system is housed in the support, the vibrational system includes vibrating diaphragm and voice coil loudspeaker voice coil, institute
The central position that voice coil loudspeaker voice coil is glued at the lower surface of the vibrating diaphragm is stated, the voice coil loudspeaker voice coil is inserted in the magnetic gap, when the voice coil loudspeaker voice coil
When being passed through AC signal, the voice coil loudspeaker voice coil is influenceed to produce vibration by magnetic fields in the magnetic gap, so as to drive and the sound
The glued vibrating diaphragm of circle vibrates together.
9. electro-acoustic element according to claim 8, it is characterised in that the electro-acoustic element also includes protecgulum, the protecgulum
Fix on the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166652.1U CN206575592U (en) | 2017-02-23 | 2017-02-23 | Magnetic circuit system and the electro-acoustic element using the magnetic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720166652.1U CN206575592U (en) | 2017-02-23 | 2017-02-23 | Magnetic circuit system and the electro-acoustic element using the magnetic circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575592U true CN206575592U (en) | 2017-10-20 |
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ID=60059202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720166652.1U Active CN206575592U (en) | 2017-02-23 | 2017-02-23 | Magnetic circuit system and the electro-acoustic element using the magnetic circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206575592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468940A (en) * | 2020-11-30 | 2021-03-09 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
-
2017
- 2017-02-23 CN CN201720166652.1U patent/CN206575592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112468940A (en) * | 2020-11-30 | 2021-03-09 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
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