CN218473380U - Sound production device - Google Patents
Sound production device Download PDFInfo
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- CN218473380U CN218473380U CN202222250227.4U CN202222250227U CN218473380U CN 218473380 U CN218473380 U CN 218473380U CN 202222250227 U CN202222250227 U CN 202222250227U CN 218473380 U CN218473380 U CN 218473380U
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Abstract
The utility model provides a sounder which comprises a basin frame, a magnetic circuit system, a first vibration system and a second vibration system, wherein the first vibration system and the second vibration system are respectively arranged at two sides of the system; the central magnetic steel comprises a first magnet part fixed on the first central magnetic yoke and a second magnet part fixed on one side of the first central magnetic yoke, wherein the first magnet part is far away from the second magnet part, and the projection area of the first magnet part along the vibration direction is larger than that of the second magnet part along the vibration direction. Through setting up the first magnet portion that projection area is bigger than second magnet portion, effectively increased the volume of central magnet steel, promoted magnetic circuit's magnetic field performance in limited space design to acoustic performance of sound production device has been promoted.
Description
[ technical field ] A
The utility model relates to an electroacoustic conversion technical field especially relates to a vocal device for portable mobile terminal.
[ background of the invention ]
With the development of portable mobile terminal technology, people have higher and higher requirements on the sound effect of the portable mobile terminal; meanwhile, as the portable mobile terminal is thinned, the sound generating device also needs to be adapted to the thinning development trend.
In the existing sound production device, in order to improve the acoustic performance of the sound production device, a technical scheme of double-diaphragm double-sided sound production is generally adopted; generally, a magnetic circuit system of a dual-sided sounding device includes a main magnetic yoke located at a middle position, a main magnetic steel fixed to the main magnetic yoke, and a side magnetic yoke annularly disposed around the main magnetic steel and forming a magnetic gap with the main magnetic steel, so as to enhance magnetic field performance and thus improve acoustic performance, the number of magnetic steels or the volume of the main magnetic steel needs to be increased, which inevitably increases the volume of the sounding device, and is not favorable for thinning.
Therefore, there is a need to provide a new sounding device to solve the above problems.
[ Utility model ] A method for manufacturing a semiconductor device
An object of the utility model is to provide a sound production device of acoustic performance preferred.
In order to achieve the above object, the present invention provides a sound generating device, which includes a basin frame having an accommodating space, a magnetic circuit system accommodated in the accommodating space, and a first vibration system and a second vibration system respectively disposed at two sides of the magnetic circuit system, wherein the magnetic circuit system includes a first center magnetic yoke located at a middle position, a center magnetic steel fixed to the first center magnetic yoke, a side magnetic steel assembly annularly disposed on the center magnetic steel and fixed to the basin frame, and a connecting portion connecting the first center magnetic yoke and the side magnetic steel assembly, and the center magnetic steel and the side magnetic steel assembly form a magnetic gap at an interval;
the first vibration system comprises a first vibrating diaphragm fixed on the basin frame and a first voice coil driving the first vibrating diaphragm to vibrate and sound, and the first voice coil is inserted into the magnetic gap;
the second vibration system comprises a second vibrating diaphragm fixed on the basin frame and a second voice coil driving the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted into the magnetic gap;
the central magnetic steel comprises a first magnet part fixed on the first central magnetic yoke and a second magnet part fixed on one side of the first central magnetic yoke, wherein the first magnet part is far away from the second magnet part, and the projection area of the first magnet part along the vibration direction is larger than that of the second magnet part along the vibration direction.
Preferably, the magnetic gap includes by first magnet portion with limit magnetic steel components interval sets up the first magnetic gap that forms and by second magnet portion with limit magnetic steel components interval sets up the second magnetic gap that forms, first voice coil loudspeaker voice coil is inserted and is located first magnetic gap, the second voice coil loudspeaker voice coil is inserted and is located second magnetic gap.
Preferably, limit magnetic steel components including being fixed in the limit magnet steel of basin frame, being fixed in limit magnet steel orientation the first limit magnetic conductive plate of first vibrating diaphragm one side and being fixed in limit magnet steel orientation the second limit magnetic conductive plate of second vibrating diaphragm one side, connecting portion connect second limit magnetic conductive plate with first central yoke.
Preferably, the connecting portion includes a first connecting portion connected to the first central magnetic yoke, a second connecting portion connected to the second side magnetic conductive plate, and a third connecting portion connecting the first connecting portion and the second connecting portion, the first connecting portion is fixed to a surface of the first central magnetic yoke facing the central magnetic steel, and the second connecting portion is fixed to a surface of the second side magnetic conductive plate facing the first central magnetic yoke.
Preferably, the third connecting portion extends in the vibration direction.
Preferably, the basin frame is rectangular, and the connecting portion are connected to the second side magnetic conduction plate and the edge of the first center magnetic yoke along the short axis direction.
Preferably, the magnetic circuit system further includes a second center yoke fixed to a side of the second magnet portion away from the first center yoke.
Preferably, the basin frame comprises a first support and a second support which are connected with each other, the first diaphragm is fixed on the surface of the first support far away from the second support, and the second diaphragm is fixed on the surface of the second support far away from the first support.
Preferably, the side magnetic steel comprises a first side magnetic steel arranged along the long axis direction and a second side magnetic steel arranged along the short axis direction.
Preferably, the first edge magnetic steels comprise four first edge magnetic steels, and two first edge magnetic steels are arranged in each long axis direction of the basin stand.
Compared with the prior art, the sound production device provided by the utility model comprises a first vibration system and a second vibration system which are arranged at two sides of a magnetic circuit system, wherein the magnetic circuit system comprises a first central magnetic yoke positioned at the middle position, a central magnetic steel fixed on the first central magnetic yoke, a magnetic component which is annularly arranged on the central magnetic steel and is fixed on the basin frame, and a connecting part which is connected with the first central magnetic yoke and the side magnetic steel component, and the central magnetic steel and the side magnetic steel component form a magnetic gap at intervals; the central magnetic steel comprises a first magnet part fixed on the first central magnetic yoke and a second magnet part fixed on one side, far away from the first central magnetic yoke, of the first magnet part, and the projection area of the first magnet part in the vibration direction is larger than that of the second magnet part in the vibration direction. Through setting up the first magnet portion that projection area is bigger than second magnet portion, effectively increased the volume of central magnet steel, promoted magnetic field performance of magnetic circuit in limited space design to the acoustic performance of sounder has been promoted.
[ description of the drawings ]
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a perspective view of a sounding device of the present invention;
FIG. 2 is an exploded view of the middle sounding device of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a cross-sectional view taken along line B-B of fig. 1.
[ detailed description ] A
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1-4, the present invention provides a sound generator 100, which comprises a frame 1 having an accommodating space 10, a magnetic circuit system 2 accommodated in the accommodating space 10, and a first vibration system 3 and a second vibration system 4 respectively disposed at two sides of the magnetic circuit system 2; the first vibration system 3 and the second vibration system 4 are respectively fixed on two opposite sides of the basin frame 1. Specifically, the basin stand 1 comprises a first support 11 and a second support 2 which are connected with each other, the first vibration system 3 is fixed on the surface of the first support 11 far away from the second support 12, and the second vibration system 4 is fixed on the surface of the second support 12 far away from the first support 11.
The magnetic circuit system 2 comprises a first central magnetic yoke 21 positioned in the middle, a central magnetic steel 22 fixed on the first central magnetic yoke 21, a second central magnetic yoke 23 fixed on one side of the central magnetic steel 22 far away from the first central magnetic yoke 21, an edge magnetic steel assembly 24 annularly arranged on the central magnetic steel 22 and fixed on the basin stand 1, and a connecting part 25 connecting the first central magnetic yoke 21 and the edge magnetic steel assembly 24; wherein, the central magnetic steel 22 and the side magnetic steel assembly 24 form a magnetic gap 26 at intervals.
The first vibration system 3 includes a first diaphragm 31 fixed to the first bracket 11 and a first voice coil 32 driving the first diaphragm 31 to vibrate and generate sound, and the first voice coil 32 is inserted into the magnetic gap 26.
The second vibration system 4 includes a second diaphragm 41 fixed to the second frame 12 and a second voice coil 42 driving the second diaphragm 41 to vibrate and generate sound, and the second voice coil 42 is inserted into the magnetic gap 26.
Specifically, the central magnetic steel 22 includes a first magnet portion 221 fixed to the first central yoke 21 and a second magnet portion 222 fixed to a side of the first magnet portion 221 away from the first central yoke 21, and a projected area of the first magnet portion 221 in the vibration direction is larger than a projected area of the second magnet portion 222 in the vibration direction; it is also considered that the width of the first magnet portion 221 in the vertical vibration direction is larger than the width of the second magnet portion 222 in the vertical vibration direction. It is understood that the basin stand 1 has a rectangular shape, and accordingly, the first magnet portion 221 and the second magnet portion 222 each have a rectangular shape, that is, the width of the first magnet portion 221 in the long axis direction is larger than the width of the second magnet portion 222 in the long axis direction, and the width of the first magnet portion 221 in the short axis direction is also larger than the width of the second magnet portion 222 in the long axis direction.
Thus, the magnetic gap 26 includes a first magnetic gap 261 formed by the first magnet portion 221 and the side magnetic steel assembly 24 being arranged at an interval, and a second magnetic gap 262 formed by the second magnet portion 222 and the side magnetic steel assembly 24 being arranged at an interval, the first voice coil 32 is inserted into the first magnetic gap 261, and the second voice coil 42 is inserted into the second magnetic gap 262.
The limit magnetic steel assembly 24 is including being fixed in limit magnetic steel 241 of basin frame 1, being fixed in limit magnetic steel 241 orientation the first limit magnetic conductive plate 242 and being fixed in of first vibrating diaphragm 31 one side limit magnetic steel 241 orientation the second limit magnetic conductive plate 243 of second vibrating diaphragm 41 one side, connecting portion 25 connects second limit magnetic conductive plate 243 with first central yoke 21. The connecting portion 25 is connected to the edges of the second side magnetic conductive plate 243 and the first center yoke 21 in the short axis direction.
Specifically, the connecting portion 25 includes a second connecting portion 252 connected to a first connecting portion 251 and a second side magnetic conductive plate 243 of the first center yoke 21, and a third connecting portion 253 connected to the first connecting portion 251 and the second connecting portion 252, where the first connecting portion 251 is fixed to a surface of the first center yoke 21 facing the center magnetic steel 22, and the second connecting portion 252 is fixed to a surface of the second side magnetic conductive plate 243 facing the first center yoke 21. Further, the third connection portion 253 extends in the vibration direction.
Further, in order to improve the magnetic field performance of the magnetic circuit system 2 of the sound production device 100, the side magnetic steel 241 includes a first side magnetic steel 2411 arranged along the long axis direction and a second side magnetic steel 2412 arranged along the short axis direction; specifically, the first side magnetic steels 2411 include four, and two first side magnetic steels 2411 are arranged in each long axis direction of the basin stand 1.
Compared with the prior art, the sound production device provided by the utility model comprises a first vibration system and a second vibration system which are arranged at two sides of a magnetic circuit system, wherein the magnetic circuit system comprises a first central magnetic yoke positioned at the middle position, a central magnetic steel fixed on the first central magnetic yoke, a magnetic component which is annularly arranged on the central magnetic steel and is fixed on the basin frame, and a connecting part which is connected with the first central magnetic yoke and the magnetic component, and the central magnetic steel and the magnetic component form a magnetic gap at intervals; the central magnetic steel comprises a first magnet part fixed on the first central magnetic yoke and a second magnet part fixed on one side of the first central magnetic yoke, wherein the first magnet part is far away from the second magnet part, and the projection area of the first magnet part along the vibration direction is larger than that of the second magnet part along the vibration direction. Through setting up the first magnet portion that projection area is bigger than second magnet portion, effectively increased the volume of central magnet steel, promoted magnetic field performance of magnetic circuit in limited space design to the acoustic performance of sounder has been promoted.
The above description is only for the embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.
Claims (10)
1. A sounding device comprises a basin frame with an accommodating space, a magnetic circuit system accommodated in the accommodating space, and a first vibration system and a second vibration system which are respectively arranged on two sides of the magnetic circuit system, and is characterized in that:
the magnetic circuit system comprises a first center magnetic yoke positioned in the middle, center magnetic steel fixed on the first center magnetic yoke, a side magnetic steel assembly which is annularly arranged on the center magnetic steel and fixed on the basin frame, and a connecting part which connects the first center magnetic yoke and the side magnetic steel assembly, wherein a magnetic gap is formed between the center magnetic steel and the side magnetic steel assembly at an interval;
the first vibration system comprises a first vibrating diaphragm fixed on the basin frame and a first voice coil driving the first vibrating diaphragm to vibrate and sound, and the first voice coil is inserted into the magnetic gap;
the second vibration system comprises a second vibrating diaphragm fixed on the basin frame and a second voice coil driving the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted into the magnetic gap;
the central magnetic steel comprises a first magnet part fixed on the first central magnetic yoke and a second magnet part fixed on one side of the first central magnetic yoke, wherein the first magnet part is far away from the second magnet part, and the projection area of the first magnet part along the vibration direction is larger than that of the second magnet part along the vibration direction.
2. The sounder device according to claim 1, wherein the magnetic gaps include a first magnetic gap formed by the first magnet portion and the side magnetic steel component being spaced apart from each other and a second magnetic gap formed by the second magnet portion and the side magnetic steel component being spaced apart from each other, the first voice coil being inserted into the first magnetic gap, and the second voice coil being inserted into the second magnetic gap.
3. The sounder device according to claim 2, wherein the edge magnetic steel assembly includes edge magnetic steel fixed to the frame, a first edge magnetic conductive plate fixed to a side of the edge magnetic steel facing the first diaphragm, and a second edge magnetic conductive plate fixed to a side of the edge magnetic steel facing the second diaphragm, and the connecting portion connects the second edge magnetic conductive plate and the first center yoke.
4. The sounder device according to claim 3, wherein the connecting portions comprise a first connecting portion connected to the first center yoke and a second connecting portion connected to the second side magnetic conductive plate, the first connecting portion being secured to a surface of the first center yoke facing the center magnetic steel, and a third connecting portion connecting the first connecting portion and the second connecting portion being secured to a surface of the second side magnetic conductive plate facing the first center yoke.
5. A sounder device according to claim 4, wherein the third connecting portion extends in the direction of vibration.
6. The sounder device according to claim 5, wherein the tub support is rectangular, and the connecting portion is connected to edges of the second side magnetic conductive plate and the first center yoke in the minor axis direction.
7. A sounder device according to claim 1, wherein the magnetic circuit system further comprises a second central yoke fixed to the second magnet part on a side remote from the first central yoke.
8. The sound production device of claim 6, wherein the basin frame comprises a first support and a second support connected to each other, the first diaphragm is fixed to a surface of the first support away from the second support, and the second diaphragm is fixed to a surface of the second support away from the first support.
9. The sounding device according to claim 6, wherein the side magnetic steels comprise a first side magnetic steel arranged along a major axis direction and a second side magnetic steel arranged along a minor axis direction.
10. The sounding device according to claim 9, wherein the number of the first side magnetic steels is four, and two first side magnetic steels are arranged in each long axis direction of the basin frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250227.4U CN218473380U (en) | 2022-08-25 | 2022-08-25 | Sound production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250227.4U CN218473380U (en) | 2022-08-25 | 2022-08-25 | Sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218473380U true CN218473380U (en) | 2023-02-10 |
Family
ID=85139791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222250227.4U Active CN218473380U (en) | 2022-08-25 | 2022-08-25 | Sound production device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218473380U (en) |
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2022
- 2022-08-25 CN CN202222250227.4U patent/CN218473380U/en active Active
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