CN220896838U - Double-sided asymmetric loudspeaker - Google Patents
Double-sided asymmetric loudspeaker Download PDFInfo
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- CN220896838U CN220896838U CN202322615241.4U CN202322615241U CN220896838U CN 220896838 U CN220896838 U CN 220896838U CN 202322615241 U CN202322615241 U CN 202322615241U CN 220896838 U CN220896838 U CN 220896838U
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- voice coil
- magnetic circuit
- leveling
- polar plate
- ring
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- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 239000012528 membrane Substances 0.000 abstract 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to a loudspeaker, in order to solve the problems of large volume, poor vibration balance and large adjustment difficulty of the existing back-to-back loudspeaker, a double-sided asymmetric loudspeaker is provided, which comprises two relatively reversely spaced sound membranes, each sound membrane is provided with a voice coil, wherein the voice coil provided with one sound membrane is a large voice coil, the voice coil provided with the other sound membrane is a small voice coil, the large voice coil and the small voice coil are coaxially arranged at intervals, and the large voice coil and the small voice coil share a magnetic circuit.
Description
Technical Field
The utility model relates to a loudspeaker, in particular to a double-sided asymmetric loudspeaker.
Background
The loudspeaker is an indispensable component part of the electronic product, so that the requirements of people on sound quality are continuously improved, and the prior art is required to be upgraded.
The vibration damping effect of back-to-back speakers is undoubtedly optimal and has a significant improvement in performance, so that more and more use is made.
The height of the whole symmetrical back-to-back structure in the Z direction is higher, so that the use is limited.
The height space occupied by the Z direction can be reduced by using a structure with staggered large and small voice coils, and the voice coils and the magnetic circuits can be asymmetric, so that the vibration balance of an upper system and a lower system is difficult to realize; in particular, BL (electromechanical coupling factor) is affected by the spatial positions of the voice coil and the magnetic circuit, and the voice coils with different sizes are respectively close to the main magnet and the auxiliary magnet, and the BL has a size difference.
The magnetic circuits are shared, only BL on one side cannot be regulated, and in general, BL of a small voice coil is smaller than BL of a large voice coil, and BL can be regulated to be consistent by regulating the wire diameter; however, the coil wire is fixed in diameter and different in diameter, and the final voice coil is different in quality, and the BL is very complicated to be adjusted close to the dome with different quality.
To sum up, the existing back-to-back speaker has the problems of large volume, poor vibration balance and great adjustment difficulty.
Disclosure of utility model
The utility model aims to solve the technical problems that: in order to solve the problems of large volume, poor vibration balance and large adjustment difficulty of the existing back-to-back speaker, the double-sided asymmetric speaker is provided.
The technical scheme adopted for solving the technical problems is as follows: the double-sided asymmetric loudspeaker comprises two opposite sound films which are arranged at intervals, wherein each sound film is provided with a voice coil, the voice coil provided with one sound film is a large voice coil, the voice coil provided with the other sound film is a small voice coil, the large voice coil and the small voice coil are coaxially arranged at intervals, and the large voice coil and the small voice coil share a magnetic circuit.
Further, the magnetic circuit comprises a main magnetic circuit, a secondary magnetic circuit and a leveling magnetic circuit;
The main magnetic circuit is arranged at the center of the large voice coil and the small voice coil;
The secondary magnetic circuit is arranged on an outer ring axially spaced by the large voice coil and the small voice coil;
The leveling magnetic circuit is arranged at the radial interval position of the large voice coil and the small voice coil.
Further, the magnetic circuit comprises a main magnetic circuit, a secondary magnetic circuit and a leveling magnetic circuit;
The main magnetic circuit comprises a main magnet, an upper polar plate and a lower polar plate, wherein the upper polar plate is arranged on the upper surface of leveling magnetic steel in the main magnet and leveling magnetic circuit in a bonding way, the outer ring of the upper polar plate is a large voice coil, the lower polar plate is arranged on the lower surface of the main magnet in a bonding way, and the outer ring of the lower polar plate is a small voice coil;
the auxiliary magnetic circuit comprises an auxiliary magnet, an upper pole ring and a lower pole ring, wherein the upper pole ring is arranged on the upper surface of the auxiliary magnet in a bonding way, the inner side of the upper pole ring is provided with a large voice coil, the lower pole ring is arranged on the lower surface of leveling magnetic steel in the auxiliary magnet and leveling magnetic circuit in a bonding way, and the inner side of the lower pole ring is provided with a small voice coil;
the leveling magnetic circuit comprises leveling magnetic steel, the upper surface of the leveling magnetic steel is connected with the upper polar plate, and the lower surface of the leveling magnetic steel is connected with the lower polar ring.
Further, the upper polar plate and the upper polar ring are aligned and arranged on the same straight line, and the lower polar plate and the lower polar ring are aligned and arranged on the same straight line.
Further, the thicknesses of the main magnet, the auxiliary magnet and the leveling magnetic steel are equal.
Further, the main magnet is connected with the bracket of the loudspeaker through the upper polar plate, the leveling magnetic steel and the lower polar ring in sequence.
The double-sided asymmetric loudspeaker has the beneficial effects that the BL of the voice coil can be conveniently leveled by the small magnetic steel with adjustable size (leveling magnetic steel in a leveling magnetic circuit) in the magnetic circuit system, so that the loss is excessive and the defect is overcome.
The size and magnetizing direction of the leveling magnetic steel can be adjusted, and the leveling of the performance parameters BL can be completed by only adjusting one magnetic steel according to two BL results of actual tests without influencing other performance parameters. Structurally, the magnetic steel also plays a role in connecting and fixing the main magnet, replaces the former magnetic bowl support, and does not occupy extra space.
Meanwhile, the design and debugging process of the double-sided large and small voice coil loudspeaker is greatly simplified, the structural space is fully utilized, and the BL value is made as large as possible on the basis of balancing BL.
In conclusion, the utility model has the characteristics of simple structure, small volume, high space utilization rate, good vibration balance, easy adjustment and large BL value.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of A-A in fig. 1.
Fig. 3 is a cross-sectional view of B-B of fig. 1.
Fig. 4 is a BL control chart of the present utility model.
In the figure: 1. the magnetic steel leveling device comprises a sound film, a support, a large voice coil, a small voice coil, a main magnet, an upper polar plate, a lower polar plate, an auxiliary magnet, an upper polar ring, a lower polar ring and leveling magnetic steel.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and a preferred embodiment. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
The double-sided asymmetric loudspeaker shown in fig. 1 to 3 comprises two sound films 1, wherein the two sound films 1 are reversely bonded on a support 2 (a shell) of the loudspeaker one by one, a large voice coil 3, a small voice coil 4, a main magnetic circuit, a secondary magnetic circuit and a leveling magnetic circuit are mainly arranged between the two sound films 1, the large voice coil 3 is arranged below an upper sound film, the small voice coil 4 is arranged on a lower sound film, the large voice coil 3 and the small voice coil 4 are coaxially arranged at intervals, namely, a gap is reserved between the large voice coil 3 and the small voice coil 4 when the large voice coil 3 is arranged below the upper small voice coil 4, the large voice coil 3 and the small voice coil 4 are sleeved in a non-overlapping mode, and the diameter of the large voice coil 3 is larger than the diameter of the small voice coil 4 or the circumference of the large voice coil 3 is larger than the circumference of the small voice coil 4.
The main magnetic circuit is arranged at the common central position of the large voice coil 3 and the small voice coil 4, the auxiliary magnetic circuit is arranged at the outer ring of the large voice coil 3 and the small voice coil 4 at intervals in the axial direction (up-down direction), and the leveling magnetic circuit is arranged at the radial (horizontal) interval position of the large voice coil 3 and the small voice coil 4.
The main magnetic circuit mainly comprises a main magnet 5, an upper polar plate 6 and a lower polar plate 7, the auxiliary magnetic circuit mainly comprises an auxiliary magnet 8, an upper polar ring 9 and a lower polar ring 10, and the leveling magnetic circuit mainly comprises leveling magnetic steel 11;
The structure of the main magnetic circuit is as follows: the upper polar plate 6 is mounted on the upper surface of the main magnet 5 and the upper surface of the leveling magnetic steel 11 in a bonding way, the outer ring of the upper polar plate 6 is a large voice coil 3, the lower polar plate 7 is mounted on the lower surface of the main magnet 5 in a bonding way, and the outer ring of the lower polar plate 7 is a small voice coil 4;
The structure of the secondary magnetic circuit is as follows: the upper pole ring 9 is mounted on the upper surface of the auxiliary magnet 8 in a bonding way, the inner side of the upper pole ring 9 is provided with a large voice coil 3, the lower pole ring 10 is mounted on the lower surface of the auxiliary magnet 8 and the lower surface of the leveling magnetic steel 11 in a bonding way, and the inner side of the lower pole ring 10 is provided with a small voice coil 3;
The leveling magnetic circuit has the structure that the upper surface of the leveling magnetic steel 11 is attached to the lower surface of the upper polar plate 6, and the lower surface of the leveling magnetic steel 11 is attached to the upper surface of the lower polar ring 10.
The upper polar plate 6 and the upper polar ring 9 are aligned on the same straight line, the lower polar plate 7 and the lower polar ring 10 are aligned on the same straight line, and the thicknesses of the main magnet 5, the auxiliary magnet 8 and the leveling magnetic steel 11 are equal; the main magnet 5 is fixedly connected with the bracket 2 through the upper polar plate 6, the leveling magnetic steel 11 and the lower polar ring 10.
According to the utility model, by means of the size-adjustable leveling magnetic steel 11 in the magnetic circuit system, the BL of the voice coil with the size can be conveniently leveled, the size and magnetizing direction of the leveling magnetic steel 11 can be adjusted, and the leveling of the performance parameters BL can be completed by only adjusting one leveling magnetic steel 11 according to the two BL results of actual tests, and the performance parameters BL cannot be influenced. Structurally, the leveling magnetic steel 11 also plays a role in connecting the main magnet 5 and fixing the main magnet 5, replaces the former magnetic bowl bracket, and does not occupy extra space; the utility model also greatly simplifies the design and debugging process of the double-sided large and small voice coil loudspeaker, fully utilizes the structural space and makes the BL value as large as possible on the basis of balancing BL.
The foregoing description is merely illustrative of specific embodiments of the utility model, and the utility model is not limited to the details shown, since modifications and variations of the foregoing embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (6)
1. A double-sided asymmetric speaker, characterized by: the voice coil comprises two opposite voice films arranged at intervals, each voice film is provided with a voice coil, wherein the voice coil provided with one voice film is a large voice coil, the voice coil provided with the other voice film is a small voice coil, the large voice coil and the small voice coil are coaxially arranged at intervals, and the large voice coil and the small voice coil share a magnetic circuit.
2. A double-sided asymmetric loudspeaker as claimed in claim 1, wherein: the magnetic circuit comprises a main magnetic circuit, a secondary magnetic circuit and a leveling magnetic circuit;
The main magnetic circuit is arranged at the center of the large voice coil and the small voice coil;
The secondary magnetic circuit is arranged on an outer ring axially spaced by the large voice coil and the small voice coil;
The leveling magnetic circuit is arranged at the radial interval position of the large voice coil and the small voice coil.
3. A double-sided asymmetric loudspeaker as claimed in claim 1 or 2, characterized in that: the magnetic circuit comprises a main magnetic circuit, a secondary magnetic circuit and a leveling magnetic circuit;
The main magnetic circuit comprises a main magnet, an upper polar plate and a lower polar plate, wherein the upper polar plate is arranged on the upper surface of leveling magnetic steel in the main magnet and leveling magnetic circuit in a bonding way, the outer ring of the upper polar plate is a large voice coil, the lower polar plate is arranged on the lower surface of the main magnet in a bonding way, and the outer ring of the lower polar plate is a small voice coil;
the auxiliary magnetic circuit comprises an auxiliary magnet, an upper pole ring and a lower pole ring, wherein the upper pole ring is arranged on the upper surface of the auxiliary magnet in a bonding way, the inner side of the upper pole ring is provided with a large voice coil, the lower pole ring is arranged on the lower surface of leveling magnetic steel in the auxiliary magnet and leveling magnetic circuit in a bonding way, and the inner side of the lower pole ring is provided with a small voice coil;
the leveling magnetic circuit comprises leveling magnetic steel, the upper surface of the leveling magnetic steel is connected with the upper polar plate, and the lower surface of the leveling magnetic steel is connected with the lower polar ring.
4. A double-sided asymmetric loudspeaker as claimed in claim 3, wherein: the upper polar plate and the upper polar ring are aligned and arranged on the same straight line, and the lower polar plate and the lower polar ring are aligned and arranged on the same straight line.
5. A double-sided asymmetric loudspeaker as claimed in claim 3, wherein: the thickness of the main magnet, the auxiliary magnet and the leveling magnetic steel is equal.
6. A double-sided asymmetric loudspeaker as claimed in claim 3, wherein: the main magnet is connected with the bracket of the loudspeaker through the upper polar plate, the leveling magnetic steel and the lower polar ring in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322615241.4U CN220896838U (en) | 2023-09-26 | 2023-09-26 | Double-sided asymmetric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322615241.4U CN220896838U (en) | 2023-09-26 | 2023-09-26 | Double-sided asymmetric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220896838U true CN220896838U (en) | 2024-05-03 |
Family
ID=90841615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322615241.4U Active CN220896838U (en) | 2023-09-26 | 2023-09-26 | Double-sided asymmetric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220896838U (en) |
-
2023
- 2023-09-26 CN CN202322615241.4U patent/CN220896838U/en active Active
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