CN219499513U - Coaxial earphone core - Google Patents
Coaxial earphone core Download PDFInfo
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- CN219499513U CN219499513U CN202223319366.4U CN202223319366U CN219499513U CN 219499513 U CN219499513 U CN 219499513U CN 202223319366 U CN202223319366 U CN 202223319366U CN 219499513 U CN219499513 U CN 219499513U
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Abstract
The utility model provides a coaxial earphone core, which comprises a first basin frame, a second basin frame, a magnetic circuit system, a first sound generating unit and a second sound generating unit, wherein the first sound generating unit and the second sound generating unit are coaxially arranged; the magnetic circuit system further comprises a second magnetic yoke fixed on the first magnetic steel and a third magnetic steel which is fixed on the second magnetic yoke and takes the shape of a ring; the second magnetic yoke comprises an annular extending wall which is bent and extends into the third magnetic steel, a second magnetic gap is formed between the extending wall and the third magnetic steel at intervals, and the second vibrating diaphragm is located on one side, close to the magnetic circuit system, of the first vibrating diaphragm in the vibrating direction. The coaxial earphone core reduces the axial height of the product and improves the vibration area of the first vibrating diaphragm, thereby improving the sound effect.
Description
[ field of technology ]
The utility model relates to the field of electroacoustic conversion, in particular to a coaxial earphone core.
[ background Art ]
With the rapid development of mobile communication technology in recent years, consumers increasingly use mobile communication equipment with voice function, and headphones become one of the indispensable communication equipment in people's daily life and work, so people not only require that their appearance be small and exquisite, wear them conveniently, but also require that their tone quality be good and have stereoscopic impression. Therefore, more reasonable design for further improving the performance and the internal structure of the earphone is a subject worthy of research.
A magnetic circuit system is generally arranged in the earphone core in the related art and is used for providing the sound effect of middle and low tones, if the sound effect of high tones is required to be provided at the same time, two coaxial magnetic circuit systems and a vibration system are required to be arranged, and the axial height of the earphone core is increased by overlapping the two magnetic circuit systems, so that the earphone core is inconvenient to install, the applicability of products is reduced, and the development trend of lightening and thinning of the traditional earphone is not facilitated; in addition, in the existing coaxial earphone core, the vibrating diaphragm of one vibrating system surrounds the outer side of the vibrating diaphragm of the other vibrating system, so that the effective vibrating area of the vibrating diaphragm at the outer side is reduced, and the sound effect of the earphone core is reduced to a certain extent.
Therefore, there is a need to provide a new earphone core to solve the above-mentioned problems.
[ utility model ]
The utility model aims to provide an earphone core with better sound effect.
In order to achieve the above-mentioned objective, the present utility model provides a coaxial ear speaker core, which includes a first frame, a second frame, a magnetic circuit system, and a first sound generating unit and a second sound generating unit coaxially disposed, wherein the first frame is disposed around the second frame, the first sound generating unit is disposed around the second sound generating unit, the first sound generating unit includes a first vibrating diaphragm and a first voice coil fixed to the first vibrating diaphragm, the outer side of the first vibrating diaphragm is fixed to the first frame, the second sound generating unit includes a second vibrating diaphragm and a second voice coil fixed to the second vibrating diaphragm, the magnetic circuit system includes a first magnetic yoke fixed to the first frame, a first magnetic steel fixed to the first magnetic yoke, a second magnetic steel spaced around the first magnetic steel, and forming a first magnetic gap, and the first voice coil is inserted into the first magnetic gap; the magnetic circuit system further comprises a second magnetic yoke fixed on the surface of the first magnetic steel, which is far away from the first magnetic yoke, and a third magnetic steel which is fixed on the second magnetic yoke and is annular, the second basin frame is fixed on the surface of the third magnetic steel, which is far away from the second magnetic yoke, and the second vibrating diaphragm is fixed on the second basin frame; the second magnetic yoke comprises an annular extending wall which is bent and extends into the third magnetic steel, a second magnetic gap is formed between the extending wall and the third magnetic steel at intervals, the second voice coil is inserted into the second magnetic gap, and the second vibrating diaphragm is located on one side, close to the magnetic circuit system, of the first vibrating diaphragm in the vibrating direction.
Preferably, the first vibrating diaphragm comprises a first inner vibrating diaphragm which is located at the middle position and is annular, a first dome surrounding the first inner vibrating diaphragm, a first framework surrounding the first dome, and a first outer vibrating diaphragm surrounding the first framework, and the second vibrating diaphragm is located at one side, close to the magnetic circuit system, of the first inner vibrating diaphragm along the vibration direction.
Preferably, the coaxial earphone core further comprises a front cover covered above the second vibrating diaphragm, and the inner side of the first inner vibrating diaphragm is fixed on the front cover.
Preferably, the front cover is provided with an acoustic outlet penetrating through the front cover along the vibration direction, and the acoustic outlet is opposite to the second vibrating diaphragm.
Preferably, the front cover comprises an outer edge arranged on the outer side of the second basin frame in a surrounding manner, an inner edge arranged above the second vibrating diaphragm in a surrounding manner to form the sound outlet, and a middle part connected with the inner edge and the outer edge, and the outer edge is fixed on the surface, away from the second magnetic yoke, of the third magnetic steel.
Preferably, the inner side of the first inner diaphragm is fixed to the middle portion.
Preferably, the first voice coil is fixed to a surface of the first bobbin facing the first magnetic gap.
Preferably, the first dome includes a first connecting portion connected to the outer side of the first inner diaphragm, a second connecting portion connected to the first skeleton, and an extending portion connecting the first connecting portion and the second connecting portion, and the extending portion extends from the second connecting portion toward the first connecting portion and away from the second diaphragm.
Preferably, the inner edge of the front cover is bent from the middle part to extend to the inner side of the first inner diaphragm in a direction away from the second diaphragm, and the inner side of the first inner diaphragm surrounds the inner edge.
Preferably, the coaxial earphone core further comprises a support member fixed on the magnetic circuit system, a first through hole penetrating through the first through hole along the vibration direction is formed in the first magnetic yoke, the support member comprises a first support portion, a second support portion and a third support portion, the first support portion is contained in the first through hole and fixed on the first magnetic yoke, the second support portion extends from the first support portion towards the second vibrating diaphragm, the third support portion extends from the second support portion towards the second vibrating diaphragm, the second support portion extends into the first magnetic steel, and the third support portion extends into the extending wall of the second magnetic yoke.
Compared with the prior art, in the earphone core provided by the utility model, the magnetic circuit system comprises the first magnetic yoke, the first magnetic steel and the second magnetic steel which is arranged on the outer side of the first magnetic steel in a spacing ring manner and forms a first magnetic gap, the second magnetic yoke which is fixed on the first magnetic steel and the third magnetic steel which is fixed on the second magnetic yoke and takes the shape of a ring, the second magnetic yoke comprises the extension arm which is bent and extends to the inner side of the third magnetic steel and forms a second magnetic gap with the third magnetic steel in a spacing manner, the first voice coil is inserted in the first magnetic gap, the second voice coil is inserted in the second magnetic gap, the first sound generating unit surrounds the outer side of the second sound generating unit, the second diaphragm is positioned on one side of the first diaphragm, which is close to the magnetic circuit system, the space below the first diaphragm is fully utilized, the space utilization rate is improved, the axial height of the coaxial earphone core is effectively reduced, and the product applicability is enhanced; and the area of the first vibrating diaphragm is not required to be sacrificed, so that the first vibrating diaphragm has enough vibrating area, and the sound effect of the coaxial earphone core is effectively improved.
[ 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 middle ear cartridge of the present utility model;
fig. 2 is an exploded view of a middle ear cartridge of the present utility model;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is an enlarged view of portion B of FIG. 3;
fig. 5 is an enlarged view of a portion C in fig. 3.
[ 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 5, the present utility model provides a coaxial ear device 100, which includes a first frame 1, a second frame 2, a magnetic circuit system 3, and a first sound generating unit 4 and a second sound generating unit 5 coaxially disposed, where the first frame 1 is annularly disposed outside the second frame 2, and the first sound generating unit 4 is annularly disposed on a peripheral side of the second sound generating unit 5.
The first sound generating unit 4 comprises a first vibrating diaphragm 41 and a first voice coil 42 fixed on the first vibrating diaphragm 41, and the outer side of the first vibrating diaphragm 41 is fixed on the first basin frame 1; the first voice coil 42 drives the first diaphragm 41 to vibrate and sound. The second sound generating unit 5 includes a second diaphragm 51 and a second voice coil 52 fixed to the second diaphragm 51; the second voice coil 52 drives the second diaphragm 51 to vibrate and sound. In the utility model, the first sound generating unit 4 is a mid-bass sound generating unit and provides mid-bass sound effects; the second sound generating unit 5 is a high-pitch sound generating unit and provides high-pitch sound effect; thus, the coaxial ear device 100 is a full-band ear device, and can provide high-quality sound effects in full-band.
The magnetic circuit system 3 comprises a first magnetic yoke 31 fixed on the first basin frame 1, a first magnetic steel 32 fixed on the first magnetic yoke 31, and a second magnetic steel 34 arranged outside the first magnetic steel 32 in a spacing ring manner and forming a first magnetic gap 33; wherein the first voice coil 42 is inserted into the first magnetic gap 33. Further, the magnetic circuit system 3 further includes a second magnetic yoke 35 fixed on a surface of the first magnetic steel 32 away from the first magnetic yoke 31, and a third magnetic steel 36 fixed on the second magnetic yoke 35 and having a ring shape, the second basin frame 2 is fixed on a surface of the third magnetic steel 36 away from the second magnetic yoke 35, and the second vibrating diaphragm 51 is fixed on the second basin frame 2; the second magnetic yoke 35 includes an extending wall 351 that is bent and extends into the third magnetic steel 36 and is annular, the extending wall 351 and the third magnetic steel 36 are spaced to form a second magnetic gap 37, the second voice coil 52 is inserted into the second magnetic gap 37, and the second diaphragm 51 is located at one side of the first diaphragm 41, which is close to the magnetic circuit system 3, along the vibration direction.
Specifically, the first diaphragm 41 includes a first inner diaphragm 411, a first dome 412 surrounding the first inner diaphragm 411, a first skeleton 413 surrounding the first dome 412, and a first outer diaphragm 414 surrounding the first skeleton 413, where the second diaphragm 51 is located on a side of the first inner diaphragm 411, along the vibration direction, near the magnetic circuit 3, and the first voice coil 42 is fixed on a surface of the first skeleton 413 facing the first magnetic gap 33. Further, the first dome 412 includes a first connecting portion 4121 connected to the outer side of the first inner diaphragm 411, a second connecting portion 4122 connected to the first frame 413, and an extending portion 4123 connecting the first connecting portion 4121 and the second connecting portion 4122, wherein the extending portion 4123 extends from the second connecting portion 4122 toward the first connecting portion 4121 and away from the second diaphragm 51. Therefore, the second sound generating unit 5 is arranged below the first vibrating diaphragm 41 of the first sound generating unit 4, so that the space below the first vibrating diaphragm 41 is fully utilized, the space utilization rate is improved, the axial height of the coaxial earphone core 100 is effectively reduced, and the applicability of products is enhanced. In addition, since the second diaphragm 51 is disposed below the first diaphragm 41, there is no need to sacrifice the area of the first diaphragm 41, thereby ensuring that the first diaphragm 41 has a sufficient vibration area, and effectively enhancing the sound effect of the earphone core 100.
The coaxial earphone 100 further comprises a front cover 6 covering the second diaphragm 51, and the inner side of the first inner diaphragm 411 is fixed on the front cover 6. It can be understood that the front cover 6 is provided with an acoustic outlet 61 penetrating therethrough along the vibration direction, the acoustic outlet 61 is disposed opposite to the second diaphragm 51, and the acoustic wave emitted by the second diaphragm 51 is transmitted to the outside through the acoustic outlet 61.
Specifically, the front cover 6 includes an outer edge 62 disposed around the outer side of the second frame 2, an inner edge 63 disposed above the second diaphragm 51 and surrounding the second frame to form the sound outlet 61, and a middle portion 64 connecting the inner edge 63 and the outer edge 62, wherein the outer edge 62 is fixed on a surface of the third magnetic steel 36 away from the second magnetic yoke 35, and the inner side of the first inner diaphragm 411 is fixed on the middle portion 64. Further, the inner edge 63 of the front cover 6 is bent from the middle portion 64 to extend to the inner side of the first inner diaphragm 411 in a direction away from the second diaphragm 51, and the inner side of the first inner diaphragm 411 surrounds the inner edge 63.
Further, the coaxial ear device 100 further includes a support member 7 fixed to the magnetic circuit 3, the first yoke 31 is provided with a first through hole 311 penetrating therethrough along the vibration direction, the support member 7 includes a first support portion 71 received in the first through hole 311 and fixed to the first yoke 31, a second support portion 72 extending from the first support portion 71 toward the second diaphragm 51, and a third support portion 73 extending from the second support portion 72 toward the second diaphragm 51, the second support portion 72 extends into the first magnetic steel 32, and the third support portion 73 extends into the extension wall 351 of the second yoke 35; it will be appreciated that the third supporting portion 73 is disposed at a distance from the second diaphragm 51 in the vibration direction.
Compared with the related art, in the earphone core provided by the utility model, the magnetic circuit system comprises the first magnetic yoke, the first magnetic steel and the second magnetic steel which is arranged on the outer side of the first magnetic steel in a spacing ring manner and forms a first magnetic gap, the second magnetic yoke fixed on the first magnetic steel and the third magnetic steel fixed on the second magnetic yoke and in a ring shape, the second magnetic yoke comprises the extension arm which is bent and extends to the inner side of the third magnetic steel and forms a second magnetic gap with the third magnetic steel in a spacing manner, the first voice coil is inserted in the first magnetic gap, the second voice coil is inserted in the second magnetic gap, the first sound generating unit surrounds the outer side of the second sound generating unit, the second vibrating diaphragm is positioned on one side of the first vibrating diaphragm, which is close to the magnetic circuit system, space below the first vibrating diaphragm is fully utilized, space utilization rate is improved, axial height of the coaxial earphone core is effectively reduced, and product applicability is enhanced; and the area of the first vibrating diaphragm is not required to be sacrificed, so that the first vibrating diaphragm has enough vibrating area, and the sound effect of the coaxial earphone core is effectively improved.
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 (10)
1. The coaxial earphone core comprises a first basin frame, a second basin frame, a magnetic circuit system, a first sound generating unit and a second sound generating unit, wherein the first sound generating unit and the second sound generating unit are coaxially arranged, the first basin frame is arranged on the outer side of the second basin frame in a surrounding mode, the first sound generating unit is arranged on the outer side of the second sound generating unit in a surrounding mode, the first sound generating unit comprises a first vibrating diaphragm and a first voice coil fixed on the first vibrating diaphragm, the outer side of the first vibrating diaphragm is fixed on the first basin frame, the second sound generating unit comprises a second vibrating diaphragm and a second voice coil fixed on the second vibrating diaphragm, and the coaxial earphone core is characterized in that the magnetic circuit system comprises a first magnetic yoke fixed on the first basin frame, a first magnetic steel fixed on the first magnetic yoke, a second magnetic steel arranged on the outer side of the first magnetic steel in a spacing ring mode and forming a first magnetic gap, and the first voice coil is inserted in the first magnetic gap; the magnetic circuit system further comprises a second magnetic yoke fixed on the surface of the first magnetic steel, which is far away from the first magnetic yoke, and a third magnetic steel which is fixed on the second magnetic yoke and is annular, the second basin frame is fixed on the surface of the third magnetic steel, which is far away from the second magnetic yoke, and the second vibrating diaphragm is fixed on the second basin frame; the second magnetic yoke comprises an annular extending wall which is bent and extends into the third magnetic steel, a second magnetic gap is formed between the extending wall and the third magnetic steel at intervals, the second voice coil is inserted into the second magnetic gap, and the second vibrating diaphragm is located on one side, close to the magnetic circuit system, of the first vibrating diaphragm in the vibrating direction.
2. The coaxial ear speaker device as defined in claim 1, wherein the first diaphragm comprises a first inner diaphragm positioned at a middle position and having a ring shape, a first dome surrounding the first inner diaphragm, a first skeleton surrounding the first dome, and a first outer diaphragm surrounding the first skeleton, and the second diaphragm is positioned at a side of the first inner diaphragm close to the magnetic circuit system along a vibration direction.
3. The coaxial ear speaker device of claim 2, further comprising a front cover over the second diaphragm, the inner side of the first inner diaphragm being secured to the front cover.
4. A headphone core according to claim 3, wherein the front cover is provided with a sound outlet penetrating therethrough in the vibration direction, the sound outlet being disposed opposite to the second diaphragm.
5. The coaxial ear speaker device as defined in claim 4, wherein the front cover comprises an outer edge surrounding the outer side of the second frame, an inner edge above the second diaphragm surrounding the sound outlet, and an intermediate portion connecting the inner edge and the outer edge, and the outer edge is fixed to a surface of the third magnetic steel away from the second yoke.
6. The coaxial ear speaker device of claim 5, wherein an inner side of the first inner diaphragm is secured to the intermediate portion.
7. The coaxial ear speaker of claim 6, wherein the first voice coil is secured to a surface of the first armature facing the first magnetic gap.
8. The coaxial ear speaker device of claim 2, wherein the first dome includes a first connection portion connected to an outer side of the first inner diaphragm, a second connection portion connected to the first frame, and an extension portion connecting the first connection portion and the second connection portion, the extension portion extending from the second connection portion toward the first connection portion and away from the second diaphragm.
9. The ear speaker device as claimed in claim 5, wherein said inner edge of said front cover is folded from said intermediate portion in a direction away from said second diaphragm to an inner side of said first inner diaphragm, said inner side of said first inner diaphragm surrounding said inner edge.
10. The coaxial ear speaker device according to claim 1, further comprising a support member fixed to the magnetic circuit system, wherein the first yoke is provided with a first through hole penetrating therethrough in a vibration direction, the support member includes a first support portion received in the first through hole and fixed to the first yoke, a second support portion extending from the first support portion toward the second diaphragm, and a third support portion extending from the second support portion toward the second diaphragm, the second support portion extending into the first magnetic steel, and the third support portion extending into the extension wall of the second yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223319366.4U CN219499513U (en) | 2022-12-06 | 2022-12-06 | Coaxial earphone core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223319366.4U CN219499513U (en) | 2022-12-06 | 2022-12-06 | Coaxial earphone core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219499513U true CN219499513U (en) | 2023-08-08 |
Family
ID=87506185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223319366.4U Active CN219499513U (en) | 2022-12-06 | 2022-12-06 | Coaxial earphone core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219499513U (en) |
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2022
- 2022-12-06 CN CN202223319366.4U patent/CN219499513U/en active Active
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