CN218998273U - Sounding device - Google Patents
Sounding device Download PDFInfo
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- CN218998273U CN218998273U CN202223264758.5U CN202223264758U CN218998273U CN 218998273 U CN218998273 U CN 218998273U CN 202223264758 U CN202223264758 U CN 202223264758U CN 218998273 U CN218998273 U CN 218998273U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000003466 welding Methods 0.000 claims abstract description 33
- 238000005476 soldering Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 9
- 230000004308 accommodation Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 101150114468 TUB1 gene Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The sound generating device provided by the utility model comprises a basin frame, a magnetic circuit system, and a first vibration system and a second vibration system which are arranged on two sides of the magnetic circuit system; the magnetic circuit system further comprises a first inner magnetic yoke, main magnetic steel, side magnetic steel fixed on the basin stand and a first side magnetic yoke fixed on the side magnetic steel; the first vibration system comprises a first vibrating diaphragm, a first voice coil and a first circuit board; the first circuit board comprises a first fixing part fixed on the basin frame, a first welding part welded with the first voice coil and a first elastic part, wherein the first elastic part and the first side magnetic yoke are arranged at intervals along the vibration direction, and the first welding part is fixed on the surface of the first side magnetic yoke, which faces the first vibrating diaphragm. By fixing the first welding part to the first side magnetic yoke, the magnetic field performance of the sounding device is effectively improved.
Description
[ field of technology ]
The utility model relates to the technical field of electroacoustic conversion, in particular to a sounding device for a portable mobile terminal.
[ background Art ]
With the development of portable mobile terminal technology, the requirements of people on the sound effect of the portable mobile terminal are higher and higher, and the sound emitting device in the mobile phone is one of the requirements for realizing the high-quality sound effect.
The sounding device in the related art generally comprises a basin frame, and a vibration system and a magnetic circuit system which are fixed on the basin frame; the magnetic circuit system comprises a main magnetic yoke, main magnetic steel fixed on the main magnetic yoke, side magnetic steel fixed on the basin stand, and a main pole core and an auxiliary pole core respectively fixed on the main magnetic steel; the vibration system comprises a vibrating diaphragm, a voice coil for driving the vibrating diaphragm to sound and a flexible circuit board fixed between the vibrating diaphragm and the voice coil, wherein a bonding pad welded with the voice coil is arranged on the flexible circuit board; in the related art, in order to avoid the great loss of the magnetic field BL caused by thinning the main pole core due to avoiding the bonding pad, the bonding pad is arranged outside the voice coil, and an avoiding groove is arranged on the side magnetic yoke with less influence on the magnetic field performance; even so, the magnetic circuit system also loses part BL, and can also cause the flexible circuit board to interfere with the side yoke during vibration, thereby adversely affecting vibration performance and product reliability.
Therefore, it is necessary to provide a new sound emitting device to solve the above-mentioned technical problems.
[ utility model ]
The utility model aims to provide a sound generating device which is favorable for better magnetic field performance and vibration performance.
In order to achieve the above-mentioned objective, the present utility model provides a sound generating device, which includes a basin frame having a receiving space, a magnetic circuit system received in the receiving 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 inner yoke, a main magnetic steel fixed to the first inner yoke, a side magnetic steel fixed to the basin frame, a first side yoke fixed to a side of the side magnetic steel facing the first vibration system, and a connecting portion connecting the first inner yoke and the first side yoke; the main magnetic steel and the first side magnetic yoke form a first magnetic gap, and the side magnetic steel and the first inner magnetic yoke form a second magnetic gap;
the first vibration system comprises a first vibrating diaphragm fixed on the basin frame, a first voice coil inserted in the first magnetic gap and a first circuit board electrically connected with the first voice coil, and the first voice coil is rectangular and is arranged on the outer side of the main magnetic steel in a surrounding mode;
the second vibration system comprises a second vibrating diaphragm fixed on the basin frame and a second voice coil inserted in the second magnetic gap; the first voice coil and the second voice coil are arranged in a staggered mode;
the first circuit board comprises a first fixing part fixed on the basin frame, a first welding part welded with the first voice coil, and a first elastic part connected with the first fixing part and the first welding part, wherein the first elastic part and the first side magnetic yoke are arranged at intervals along the vibration direction, and the first welding part is fixed on the surface of the first side magnetic yoke, which faces the first vibrating diaphragm.
Preferably, the first circuit board further includes a first bending portion extending from an end of the first elastic portion away from the first fixing portion toward the first side yoke, and the first soldering portion extends from an end of the first bending portion away from the first elastic portion.
Preferably, the basin frame is rectangular, and the first elastic part extends along the long axis of the basin frame.
Preferably, the basin frame is provided with a fixing boss extending towards the first voice coil, the first elastic part is located at one side of the fixing boss towards the first vibrating diaphragm, and the first bending part is fixed to the fixing boss.
Preferably, the edge magnetic steel is fixed on the basin frame along the long axis direction, and the connecting part is connected with the edges of the first inner magnetic yoke and the first edge magnetic yoke along the short axis direction.
Preferably, the projection of the first voice coil along the vibration direction is located inside the second voice coil.
Preferably, the magnetic circuit system further comprises a second inner yoke fixed on one side of the main magnetic steel away from the first inner yoke, and a second side yoke fixed on one side of the side magnetic steel facing the second vibrating diaphragm.
Preferably, the second vibration system further includes a second circuit board electrically connected to the second voice coil, the second circuit board includes a second fixing portion fixed to one end of the second voice coil away from the second diaphragm, a second welding portion fixed to the frame, a second elastic portion connecting the second fixing portion and the second welding portion, and a third welding portion extending from the second fixing portion to an outer side of the second voice coil, and the second voice coil is electrically connected to the third welding portion.
Preferably, the number of the second circuit boards is two, and the two second circuit boards are arranged on two sides of the second voice coil along the short axis direction.
Compared with the prior art, the sounding device provided by the utility model comprises a basin frame, a magnetic circuit system, a first vibration system and a second vibration system, wherein the magnetic circuit system comprises a first inner magnetic yoke, main magnetic steel fixed on the first inner magnetic yoke, side magnetic steel fixed on the basin frame, a first side magnetic yoke fixed on the side magnetic steel and a connecting part for connecting the first inner magnetic yoke and the first side magnetic yoke; the first voice coil of the first vibration system is inserted in a first magnetic gap formed by the main magnetic steel and the first side magnetic yoke, a first circuit board in the first vibration system comprises a first fixing part fixed on the basin frame, a first welding part welded with the first voice coil, and a first elastic part connected with the first fixing part and the first welding part, the first elastic part and the first side magnetic yoke are arranged at intervals along the vibration direction, and the first welding part is fixed on the surface of the first side magnetic yoke towards the first vibrating diaphragm. Through with first welding portion direct fixation in first side yoke makes first elastic part with first welding portion is not in the coplanar and forms the difference in height, need not set up the recess on the first side yoke dodges first welding portion, not only effectively avoided the vibration in-process first welding portion with mutual interference between the first side yoke has still effectively promoted magnetic circuit's BL to magnetic field performance has been strengthened.
[ description of the drawings ]
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a perspective view of a sound emitting device of the present utility model;
FIG. 2 is an exploded view of a sound emitting device of the present utility model;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B in FIG. 1;
FIG. 5 is a perspective view of another view of the cross-sectional view of FIG. 3;
FIG. 6 is a perspective view of a portion of the structure of a sound emitting device of the present utility model;
fig. 7 is a perspective view showing a part of the structure of the sound emitting device of the present utility model.
[ detailed description ] of the utility model
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1 to 7, the present utility model provides a sound generating device 100, which includes a basin frame 1 having a receiving space 10, a magnetic circuit system 2 received in the receiving 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 to opposite sides of the tub frame 1.
The magnetic circuit system 2 comprises a first inner yoke 21, a main magnetic steel 22 fixed on the first inner yoke 21, a side magnetic steel 23 fixed on the basin frame 1, a first side yoke 24 fixed on the side of the side magnetic steel 23 facing the first vibration system 3, and a connecting part 25 connecting the first inner yoke 21 and the first side yoke 24; the main magnet steel 22 and the first side magnet yoke 24 form a first magnetic gap 26, and the side magnet steel 23 and the first inner magnet yoke 21 form a second magnetic gap 27. It can be understood that the sound generating device 100 is rectangular, and correspondingly, the basin stand 1 is also rectangular; in the present utility model, the side magnetic steel 23 is fixed to the frame 1 in the long axis direction, that is, extends in the long axis direction of the frame 1, and the connecting portion 25 connects edges of the first inner yoke 21 and the first side yoke 24 in the short axis direction.
As shown in fig. 3 to 4, the first vibration system 3 includes a first diaphragm 31 fixed to the frame 1, a first voice coil 32 inserted in the first magnetic gap 26, and a first circuit board 33 electrically connected to the first voice coil 32; the first voice coil 32 is rectangular and is disposed around the outer side of the main magnetic steel 22. The first voice coil 32 is energized to drive the first diaphragm 31 to vibrate and sound.
The second vibration system 4 includes a second diaphragm 41 fixed to the frame 1, a second voice coil 42 inserted in the second magnetic gap 27, and a second circuit board 43 electrically connected to the second voice coil 42; wherein, the first voice coil 32 and the second voice coil 42 are arranged in a staggered manner. The second voice coil 42 is energized to drive the second diaphragm 41 to vibrate and sound. Specifically, in the vibration direction, the projection of the first voice coil 32 falls into the second voice coil 42. The first voice coil 32 and the second voice coil 42 are each rectangular.
Further, the sound generating device 100 further includes a front cover 5 fixed on a side of the second diaphragm 41 away from the second voice coil 42, the front cover 5 is provided with a sound outlet 51, and sound waves generated by vibration of the second diaphragm 41 are transmitted to the outside through the sound outlet 51.
As shown in fig. 2 to 6, the first circuit board 33 includes a first fixing portion 331 fixed to the frame 1, a first soldering portion 332 soldered to the first voice coil 32, and a first elastic portion 333 connecting the first fixing portion 31 and the first soldering portion 332, the first elastic portion 333 being disposed at a distance from the first side yoke 24 in the vibration direction, the first soldering portion 332 being fixed to a surface of the first side yoke 23 facing the first diaphragm 31. Specifically, the first circuit board 33 further includes a first bending portion 334 extending from an end of the first elastic portion 333 away from the first fixing portion 331 toward the first side yoke 24, and the first soldering portion 332 extends from an end of the first bending portion 334 away from the first elastic portion 333. That is, the first bent portion 334 connects the first elastic portion 333 and the first welded portion 332; by directly fixing the first welding portion 332 to the first side yoke 24, the first elastic portion 333 and the first welding portion 332 are not in the same plane to form a height difference, and a groove is not required to be formed in the first side yoke 24 to avoid the first welding portion 332, so that not only is mutual interference between the first welding portion 332 and the first side yoke 24 avoided in the vibration process, but also BL of the magnetic circuit system 2 is effectively improved, and magnetic field performance is enhanced.
It can be appreciated that since the side magnetic steel 23 is fixed to the long axis direction of the tub 1, the first elastic part 333 extends along the long axis of the tub 1. Further, the frame 1 is provided with a fixing boss 11 extending toward the first voice coil 32, the first elastic portion 333 is located at a side of the fixing boss 11 facing the first diaphragm 31, and the first bending portion 334 is fixed to the fixing boss 11, so that the influence of the first elastic portion 333 on the first welding portion 332 during vibration is reduced, the first welding portion 332 is more firmly fixed to the first side yoke 24, and reliability of the sound generating device 100 is improved.
The magnetic circuit system 2 further comprises a second inner yoke 28 fixed on the side of the main magnet steel 22 away from the first inner yoke 21, and a second side yoke 29 fixed on the side of the side magnet steel 23 facing the second diaphragm 41.
The second circuit board 43 includes a second fixing portion 431 fixed to an end of the second voice coil 42 away from the second diaphragm 41, a second soldering portion 432 fixed to the frame 1, a second elastic portion 433 connecting the second fixing portion 431 and the second soldering portion 432, and a third soldering portion 434 extending from the second fixing portion 431 to an outside of the second voice coil 42, and the second voice coil 42 is electrically connected to the third soldering portion 434. Specifically, two second circuit boards 43 are provided, and the two second circuit boards 43 are disposed on two sides of the second voice coil 42 along the short axis direction. Further, the sound generating device further comprises a first conductive member 6 and a second conductive member 7 fixed to the basin frame 1, the second circuit board 43 is electrically connected with an external circuit through the first conductive member 6, and the first circuit board 33 is electrically connected with the external circuit through the second conductive member 7.
Compared with the prior art, the sounding device provided by the utility model comprises a basin frame, a magnetic circuit system, a first vibration system and a second vibration system, wherein the magnetic circuit system comprises a first inner magnetic yoke, main magnetic steel fixed on the first inner magnetic yoke, side magnetic steel fixed on the basin frame, a first side magnetic yoke fixed on the side magnetic steel and a connecting part for connecting the first inner magnetic yoke and the first side magnetic yoke; the first voice coil of the first vibration system is inserted in a first magnetic gap formed by the main magnetic steel and the first side magnetic yoke, a first circuit board in the first vibration system comprises a first fixing part fixed on the basin frame, a first welding part welded with the first voice coil, and a first elastic part connected with the first fixing part and the first welding part, the first elastic part and the first side magnetic yoke are arranged at intervals along the vibration direction, and the first welding part is fixed on the surface of the first side magnetic yoke towards the first vibrating diaphragm. Through with first welding portion direct fixation in first side yoke makes first elastic part with first welding portion is not in the coplanar and forms the difference in height, need not set up the recess on the first side yoke dodges first welding portion, not only effectively avoided the vibration in-process first welding portion with mutual interference between the first side yoke has still effectively promoted magnetic circuit's BL to magnetic field performance has been strengthened.
While the utility model has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the utility model.
Claims (9)
1. The utility model provides a sound production device, its includes the basin frame that has accommodation space, accept in magnetic circuit in the accommodation space and locate respectively first vibration system and the second vibration system of magnetic circuit both sides, its characterized in that:
the magnetic circuit system comprises a first inner magnetic yoke, main magnetic steel fixed on the first inner magnetic yoke, side magnetic steel fixed on the basin frame, a first side magnetic yoke fixed on one side of the side magnetic steel facing the first vibration system and a connecting part for connecting the first inner magnetic yoke and the first side magnetic yoke; the main magnetic steel and the first side magnetic yoke form a first magnetic gap, and the side magnetic steel and the first inner magnetic yoke form a second magnetic gap;
the first vibration system comprises a first vibrating diaphragm fixed on the basin frame, a first voice coil inserted in the first magnetic gap and a first circuit board electrically connected with the first voice coil, and the first voice coil is rectangular and is arranged on the outer side of the main magnetic steel in a surrounding mode;
the second vibration system comprises a second vibrating diaphragm fixed on the basin frame and a second voice coil inserted in the second magnetic gap; the first voice coil and the second voice coil are arranged in a staggered mode;
the first circuit board comprises a first fixing part fixed on the basin frame, a first welding part welded with the first voice coil, and a first elastic part connected with the first fixing part and the first welding part, wherein the first elastic part and the first side magnetic yoke are arranged at intervals along the vibration direction, and the first welding part is fixed on the surface of the first side magnetic yoke, which faces the first vibrating diaphragm.
2. The sound emitting device of claim 1, wherein the first circuit board further comprises a first bending portion extending from an end of the first elastic portion away from the first fixing portion toward the first side yoke, and the first soldering portion extends from an end of the first bending portion away from the first elastic portion.
3. The sound emitting device of claim 1, wherein the frame is rectangular and the first resilient portion extends along a long axis of the frame.
4. The sound generating device as recited in claim 2, wherein the frame is provided with a fixing boss extending toward the first voice coil, the first elastic portion is located at a side of the fixing boss toward the first diaphragm, and the first bending portion is fixed to the fixing boss.
5. The sound emitting device of claim 3, wherein the side magnetic steel is fixed to the frame in a long axis direction, and the connecting portion connects edges of the first inner yoke and the first side yoke in a short axis direction.
6. The sound emitting device of claim 1, wherein a projection of the first voice coil in the vibration direction is located inside the second voice coil.
7. The sound emitting device of claim 1, wherein the magnetic circuit system further comprises a second inner yoke fixed to a side of the main magnet steel remote from the first inner yoke and a second side yoke fixed to a side of the side magnet steel facing the second diaphragm.
8. The sound emitting device of claim 1, wherein the second vibration system further comprises a second circuit board electrically connected to the second voice coil, the second circuit board comprising a second fixing portion fixed to an end of the second voice coil remote from the second diaphragm, a second soldering portion fixed to the frame, a second elastic portion connecting the second fixing portion and the second soldering portion, and a third soldering portion extending from the second fixing portion to an outside of the second voice coil, the second voice coil being electrically connected to the third soldering portion.
9. The sound generating device of claim 8, wherein the number of the second circuit boards is two, and the two second circuit boards are disposed on two sides of the second voice coil in the short axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223264758.5U CN218998273U (en) | 2022-12-06 | 2022-12-06 | Sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223264758.5U CN218998273U (en) | 2022-12-06 | 2022-12-06 | Sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218998273U true CN218998273U (en) | 2023-05-09 |
Family
ID=86191854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223264758.5U Active CN218998273U (en) | 2022-12-06 | 2022-12-06 | Sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218998273U (en) |
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2022
- 2022-12-06 CN CN202223264758.5U patent/CN218998273U/en active Active
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