CN219919159U - Magnetic circuit of loudspeaker and loudspeaker - Google Patents
Magnetic circuit of loudspeaker and loudspeaker Download PDFInfo
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- CN219919159U CN219919159U CN202321857700.3U CN202321857700U CN219919159U CN 219919159 U CN219919159 U CN 219919159U CN 202321857700 U CN202321857700 U CN 202321857700U CN 219919159 U CN219919159 U CN 219919159U
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- conduction ring
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- 239000002699 waste material Substances 0.000 abstract description 7
- 238000013016 damping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010354 integration 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 utility model provides a magnetic circuit of a loudspeaker and the loudspeaker, which belong to the technical field of sound amplifying equipment, a second magnetic conduction ring is arranged around a first magnetic conduction ring, and a first magnetic circuit vibration system extends into the first magnetic conduction ring from one end of the first magnetic conduction ring; the second voice coil is arranged between the first magnetic conduction ring and the second magnetic conduction ring, and one end of the second voice coil extends into the space between the second group of magnetic rings from one end of the first magnetic conduction ring away from the first magnetic circuit vibration system; the magnetic induction line generated by the magnetic ring passes through the second voice coil and then enters the second magnetic conduction ring, the magnetic induction line is guided by the second magnetic conduction ring to return to the second voice coil, the second magnetic conduction ring avoids the waste of magnetic fields generated by the magnetic ring, the magnetic fields generated by the magnetic ring can all act on the second voice coil, the waste of magnetic force is avoided, the size of the magnetic ring can be reduced under the condition that the size of the magnetic field is required to be fixed, and the size of the magnetic circuit of the loudspeaker can be further reduced.
Description
Technical Field
The utility model relates to the technical field of sound amplifying equipment, in particular to a magnetic circuit of a loudspeaker and the loudspeaker.
Background
The loudspeaker is used as a transducer for restoring an electric signal into an acoustic signal, and is widely applied to electronic products, and the development trend of the existing electronic products is miniaturization, integration and high restoration degree of the acoustic signal. For example, publication No.: CN1698398A, name: a loudspeaker is disclosed, which has two loudspeakers in a frame to stabilize the sound pressure frequency characteristics. Although the technical scheme disclosed in the patent stabilizes the sound pressure frequency performance, the first magnet surrounds the first voice coil, the magnetic induction wire generated by the first magnet towards one side of the first voice coil acts on the voice coil, the magnetic induction wire generated by the other side of the first magnet is not provided with magnetic conduction pieces such as a magnetic yoke, the magnetic field generated by the first magnet in the direction cannot act on the first voice coil or the second voice coil, the magnetic field generated by the first magnet is wasted, the magnetic field not only generates electromagnetic interference to other devices of the loudspeaker to influence the sound quality of the loudspeaker, but also the volume of the first magnet cannot be miniaturized to cause resource waste.
Therefore, there is a need for a speaker magnetic circuit and the speaker that are miniaturized and avoid waste of resources.
Disclosure of Invention
In view of this, the present utility model proposes a magnetic circuit that acts on a second voice coil by a magnetic field enhanced by a combined action of a first magnetic conductive ring, a second magnetic conductive ring, a first magnetic conductive sheet, and a second magnetic conductive sheet, and a speaker using the magnetic circuit.
The technical scheme of the utility model is realized as follows: the magnetic circuit of the loudspeaker comprises a first magnetic circuit vibration system, a first magnetic conduction ring and a second magnetic conduction ring, wherein the second magnetic conduction ring is arranged around the first magnetic conduction ring, and one end of the first magnetic circuit vibration system extends into the first magnetic conduction ring; the second voice coil is arranged between the first magnetic conduction ring and the second magnetic conduction ring, and one end of the second voice coil extends into the space between the second magnetic conduction ring and the magnetic ring from one end of the first magnetic conduction ring away from the first magnetic circuit vibration system; the magnetic ring and the first magnetic circuit vibration system are opposite in magnetic pole direction.
On the basis of the above technical scheme, preferably, one end of the first magnetic conduction ring, which is far away from the first magnetic circuit vibration system, is provided with a first magnetic conduction sheet, and one end, which is far away from the first magnetic conduction sheet, between the first magnetic conduction ring and the second magnetic conduction ring is provided with a second magnetic conduction sheet.
On the basis of the technical scheme, preferably, the first magnetic circuit vibration system comprises a first voice coil and a magnetic block, wherein the magnetic block is arranged in a first magnetic conduction ring, and one end of the first voice coil extending into the first magnetic conduction ring is arranged around the magnetic block.
On the basis of the technical scheme, preferably, the first magnetic circuit vibration system further comprises a first pole piece; the N pole of the magnetic block faces the first magnetic conduction sheet, and the S pole of the magnetic block faces the first pole piece.
On the basis of the technical scheme, the magnetic ring further comprises a second pole piece, wherein the N pole of the magnetic ring faces the second magnetic conduction piece, and the S pole of the magnetic ring faces the second pole piece.
On the basis of the technical scheme, the basin frame is preferably arranged around the second magnetic conduction ring, the first vibrating diaphragm is arranged at one end of the basin frame, and the edge of the second vibrating diaphragm is arranged at the other end of the basin frame; one end of the first voice coil away from the magnetic block is connected with the first vibrating diaphragm, and one end of the second voice coil away from the magnetic ring is connected with the second vibrating diaphragm.
On the basis of the technical scheme, the novel basin frame is characterized by preferably further comprising a cover plate and a support, wherein the edge of the first vibrating diaphragm is arranged on the support, the support is fixedly arranged on the cover plate, and the cover plate is fixedly connected with one end, far away from the second vibrating diaphragm, of the basin frame.
On the basis of the technical scheme, the basin stand is preferably further provided with a connecting piece, the connecting piece is fixedly arranged on the basin stand, and the connecting piece inputs an electric signal.
On the basis of the technical scheme, preferably, a connecting ring is arranged between the basin stand and the second magnetic conduction ring.
On the basis of the technical scheme, preferably, the connecting ring is provided with air holes, and the air holes are matched with the damping.
Compared with the prior art, the loudspeaker has the following beneficial effects:
(1) The magnetic induction line generated by the magnetic ring passes through the second voice coil and then enters the second magnetic conduction ring, the magnetic induction line is guided by the second magnetic conduction ring to return to the second voice coil, the second magnetic conduction ring avoids the waste of magnetic fields generated by the magnetic ring, the magnetic fields generated by the magnetic ring can all act on the second voice coil, the waste of magnetic force is avoided, the size of the magnetic ring can be reduced under the condition that the magnetic field is required to be of a certain size, and the size of the magnetic circuit of the loudspeaker can be further reduced;
(2) The first magnetic conduction ring, the second magnetic conduction ring, the first magnetic conduction sheet and the second magnetic conduction sheet are integrally formed, so that magnetic conduction and electromagnetic interference shielding can be realized, the first magnetic circuit vibration system, the magnetic ring and the second voice coil can be positioned, and the assembly difficulty is reduced;
(3) The basin frame, the first vibrating diaphragm, the cover plate and the bracket form a closed cavity, the sound emitted by the first vibrating diaphragm is corrected, the noise is prevented from being generated, and the performance of the loudspeaker is fully exerted;
(4) The air guide hole and the damping can better maintain the sound pressure balance between the first vibrating diaphragm and the second vibrating diaphragm, and excellent loudspeaker performance is provided.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a magnetic circuit of a speaker of the present utility model;
FIG. 2 is a schematic diagram of the magnetic induction lines of a magnetic circuit of a speaker according to the present utility model;
fig. 3 is a perspective view of a speaker according to the present utility model;
fig. 4 is an exploded view of a speaker according to the present utility model;
fig. 5 is a cross-sectional view of a speaker of the present utility model.
The device comprises a 1-first magnetic circuit vibration system, a 11-first voice coil, a 12-magnetic block, a 13-first pole piece, a 21-second voice coil, a 22-magnetic ring, a 23-second pole piece, a 31-first magnetic conduction ring, a 32-second magnetic conduction ring, a 33-first magnetic conduction piece, a 34-second magnetic conduction piece, a 4-basin stand, a 41-connecting ring, a 42-air vent, a 51-first vibrating diaphragm, a 52-second vibrating diaphragm, a 6-damping, a 61-support, a 62-cover plate and a 7-connecting piece.
Detailed Description
The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
As shown in fig. 1, a magnetic circuit of a speaker comprises a first magnetic circuit vibration system 1, a first magnetic conduction ring 31 and a second magnetic conduction ring 32, wherein the second magnetic conduction ring 32 is arranged around the first magnetic conduction ring 31, and one end of the first magnetic circuit vibration system 1 extends into the first magnetic conduction ring 31; the magnetic circuit vibration system further comprises a second voice coil 21 and a magnetic ring 22, wherein the magnetic ring 22 is arranged between the first magnetic conduction ring 31 and the second magnetic conduction ring 32, and one end of the second voice coil 21 extends into the space between the second magnetic conduction ring 32 and the magnetic ring 22 from one end of the first magnetic conduction ring 31 far away from the first magnetic circuit vibration system 1. The second magnetic conduction ring 32 is arranged around the second voice coil 21 and the magnetic ring 22, the magnetic pole direction of the magnetic ring 22 is opposite to that of the first magnetic circuit vibration system 1, as shown in the magnetic induction line schematic diagram in fig. 2, the magnetic induction line generated by the magnetic ring 22 passes through the second voice coil 21 and then enters the second magnetic conduction ring 32, the magnetic induction line is guided by the second magnetic conduction ring 32 to return to the second voice coil 21 again, the magnetic field generated by the magnetic ring 22 can be applied to the second voice coil 21 by the second magnetic conduction ring 32, the magnetic field waste generated by the magnetic ring 22 is avoided, the size of the magnetic ring 22 can be reduced under the condition that the magnetic field is required to be certain, and the magnetic circuit volume of the loudspeaker can be further reduced.
The one end that first magnetic conduction ring 31 kept away from first magnetic circuit vibration system 1 is provided with first magnetic conduction piece 33, the one end that keeps away from first magnetic conduction piece 33 between first magnetic conduction ring 31 and the second magnetic conduction ring 32 is provided with second magnetic conduction piece 34, and first magnetic conduction piece 33 avoids the magnetic field of first magnetic conduction ring 31 one end unable to be applied to first magnetic circuit vibration system 1, produces extravagant, and first magnetic conduction piece 33 sets up the one end at first magnetic conduction ring 31, and second magnetic conduction piece 34 has avoided between first magnetic conduction ring 31 and the second magnetic conduction ring 32 one end magnetic field that keeps away from first magnetic conduction piece 33 can not be applied to second voice coil 21 and produces extravagant.
The first magnetic circuit vibration system 1 comprises a first voice coil 11 and a magnetic block 12, wherein the magnetic block 12 is arranged in a first magnetic conduction ring 31, and one end of the first voice coil 11 extending into the first magnetic conduction ring 31 is arranged around the magnetic block 12.
The first magnetic circuit vibration system 1 further comprises a first pole piece 13, the N pole of the magnetic block 12 faces the first magnetic conduction piece 33, and the S pole of the magnetic block 12 faces the first pole piece 13; the N pole of the magnetic block 12 faces the first magnetic conduction sheet 33, and the S pole of the magnetic block 12 faces the first pole piece 13. The magnetic ring also comprises a second pole piece 23, wherein the second pole piece 23 is arranged at one end of the magnetic ring 22, and a second magnetic conduction piece 34 is arranged at the other end of the magnetic ring 22. The first magnetic conduction ring 31, the second magnetic conduction ring 32, the first magnetic conduction sheet 33, the second magnetic conduction sheet 34, the first pole piece 13 and the second pole piece 23 are all used for avoiding that the magnetic fields generated by the magnetic blocks 12 and the magnetic rings 22 cannot fully act on the first voice coil 11 and the second voice coil 21, and avoiding that the interference of the external magnetic fields to the first voice coil 11 and the second voice coil 21 causes the tone quality to be reduced.
The first magnetic conductive ring 31, the second magnetic conductive ring 32, the first magnetic conductive sheet 33 and the second magnetic conductive sheet 34 are integrally formed, so that magnetic conduction and electromagnetic interference shielding can be realized, and the first magnetic circuit vibration system 1, the magnetic ring 22 and the second voice coil 21 can be positioned, so that the assembly difficulty is reduced.
3-5, the loudspeaker also comprises a basin frame 4, a first vibrating diaphragm 51 and a second vibrating diaphragm 52, wherein the basin frame 4 is arranged around the second magnetic conduction ring 32, the first vibrating diaphragm 51 is arranged at one end of the basin frame 4, and the edge of the second vibrating diaphragm 52 is arranged at the other end of the basin frame 4; one end of the first voice coil 11 far away from the magnetic block 12 is connected with the first vibrating diaphragm 51, and one end of the second voice coil 21 far away from the magnetic ring 22 is connected with the second vibrating diaphragm 52.
Still include apron 62 and support 61, the edge setting of first vibrating diaphragm 51 is on support 61, and support 61 is fixed to be set up on apron 62, apron 62 and basin frame 4 keep away from the one end fixed connection of second vibrating diaphragm 52, and basin frame 4, first vibrating diaphragm 51, apron 62 and support 61 have formed a inclosed cavity, correct first vibrating diaphragm 51 sound, prevent to produce the noise, full play speaker's performance.
The basin stand is characterized by further comprising a connecting piece 7, wherein the connecting piece 7 is fixedly arranged on the basin stand 4, and the connecting piece 7 inputs an electric signal.
A connecting ring 41 is arranged between the basin stand 4 and the second magnetic conduction ring 32, the connecting ring 41 divides the first vibrating diaphragm 51 and the second vibrating diaphragm 52 into two cavities, and the mutual influence of the vibration of the first vibrating diaphragm 51 and the second vibrating diaphragm 52 is realized.
Be provided with the air vent 42 on the go-between 41, the air vent 42 cooperation is provided with damping 6, and wherein, air vent 42 and damping 6 can be better maintain the acoustic pressure balance between first vibrating diaphragm 51 and the second vibrating diaphragm 52, provide outstanding speaker performance.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A magnetic circuit of a loudspeaker, comprising a first magnetic circuit vibrating system (1), characterized in that: the magnetic circuit vibration system further comprises a first magnetic conduction ring (31) and a second magnetic conduction ring (32), wherein the second magnetic conduction ring (32) is arranged around the first magnetic conduction ring (31), and the first magnetic circuit vibration system (1) extends into the first magnetic conduction ring (31) from one end of the first magnetic conduction ring (31); the voice coil motor further comprises a second voice coil (21) and a magnetic ring (22), wherein the magnetic ring (22) is arranged between the first magnetic conduction ring (31) and the second magnetic conduction ring (32), and one end of the second voice coil (21) extends into the space between the second magnetic conduction ring (32) and the magnetic ring (22) from one end of the first magnetic conduction ring (31) far away from the first magnetic circuit vibration system (1); the magnetic ring (22) is opposite to the magnetic pole direction of the first magnetic circuit vibration system (1).
2. A magnetic circuit for a loudspeaker as claimed in claim 1, wherein: one end of the first magnetic conduction ring (31) far away from the first magnetic circuit vibration system (1) is provided with a first magnetic conduction sheet (33), and one end of the first magnetic conduction ring (31) far away from the first magnetic conduction sheet (33) between the first magnetic conduction ring (31) and the second magnetic conduction ring (32) is provided with a second magnetic conduction sheet (34).
3. A magnetic circuit for a loudspeaker as claimed in claim 1, wherein: the first magnetic circuit vibration system (1) comprises a first voice coil (11) and a magnetic block (12), wherein the magnetic block (12) is arranged in a first magnetic conduction ring (31), and one end, extending into the first magnetic conduction ring (31), of the first voice coil (11) is arranged around the magnetic block (12).
4. A magnetic circuit for a loudspeaker as claimed in claim 3, characterized in that: the first magnetic circuit vibration system (1) further comprises a first pole piece (13); the N pole of the magnetic block (12) faces the first magnetic conduction sheet (33), and the S pole of the magnetic block (12) faces the first pole piece (13).
5. A magnetic circuit for a speaker as claimed in claim 4, wherein: the magnetic ring also comprises a second pole piece (23), wherein the N pole of the magnetic ring (22) faces the second magnetic conduction piece (34), and the S pole of the magnetic ring (22) faces the second pole piece (23).
6. A loudspeaker comprising a magnetic circuit of the loudspeaker of claim 5, characterized in that: the device also comprises a basin frame (4), a first vibrating diaphragm (51) and a second vibrating diaphragm (52), wherein the basin frame (4) surrounds the second magnetic conduction ring (32), the first vibrating diaphragm (51) is arranged at one end of the basin frame (4), and the edge of the second vibrating diaphragm (52) is arranged at the other end of the basin frame (4); one end of the first voice coil (11) far away from the magnetic block (12) is connected with the first vibrating diaphragm (51), and one end of the second voice coil (21) far away from the magnetic ring (22) is connected with the second vibrating diaphragm (52).
7. A loudspeaker according to claim 6, wherein: still include apron (62) and support (61), the edge setting of first vibrating diaphragm (51) is on support (61), and support (61) are fixed to be set up on apron (62), apron (62) and basin frame (4) keep away from the one end fixed connection of second vibrating diaphragm (52).
8. A loudspeaker according to claim 6, wherein: the basin stand is characterized by further comprising a connecting piece (7), wherein the connecting piece (7) is fixedly arranged on the basin stand (4), and the connecting piece (7) inputs an electric signal.
9. A loudspeaker according to claim 6, wherein: a connecting ring (41) is arranged between the basin stand (4) and the second magnetic conduction ring (32).
10. A loudspeaker according to claim 9, wherein: the connecting ring (41) is provided with an air vent (42), and the air vent (42) is provided with a damper (6) in a matching way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857700.3U CN219919159U (en) | 2023-07-14 | 2023-07-14 | Magnetic circuit of loudspeaker and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321857700.3U CN219919159U (en) | 2023-07-14 | 2023-07-14 | Magnetic circuit of loudspeaker and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219919159U true CN219919159U (en) | 2023-10-27 |
Family
ID=88434716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321857700.3U Active CN219919159U (en) | 2023-07-14 | 2023-07-14 | Magnetic circuit of loudspeaker and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219919159U (en) |
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2023
- 2023-07-14 CN CN202321857700.3U patent/CN219919159U/en active Active
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