CN215734808U - Vibrating diaphragm subassembly and speaker - Google Patents
Vibrating diaphragm subassembly and speaker Download PDFInfo
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- CN215734808U CN215734808U CN202121893612.XU CN202121893612U CN215734808U CN 215734808 U CN215734808 U CN 215734808U CN 202121893612 U CN202121893612 U CN 202121893612U CN 215734808 U CN215734808 U CN 215734808U
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Abstract
The utility model relates to the technical field of acoustic diaphragms, and particularly discloses a diaphragm assembly and a loudspeaker, wherein the diaphragm assembly comprises a diaphragm body and a line graph fixedly arranged on the diaphragm body; the diaphragm body is provided with a plurality of magnetized areas; the circuit pattern comprises a plurality of copper sheets which are arranged in one-to-one correspondence with the magnetized areas; an isolation gap is arranged between every two adjacent copper sheets; at least part of the copper sheet is provided with a plurality of balance gaps which are distributed along the width direction to divide the copper sheet into a plurality of narrow strips. The vibrating diaphragm assembly and the loudspeaker provided by the utility model can effectively solve the problem of uneven copper coating caused by overlarge distance difference between two adjacent non-copper coating areas of the existing vibrating diaphragm assembly.
Description
Technical Field
The utility model relates to the technical field of acoustic diaphragms, in particular to a vibrating diaphragm assembly and a loudspeaker.
Background
The diaphragm assembly is one of the core components of a loudspeaker and is mainly used for vibration and sound production.
Referring to fig. 1 and 2, a diaphragm assembly is provided, which includes a diaphragm body 2 and a circuit pattern 3 fixed on the diaphragm body 2; the circuit pattern 3 is made of copper foil or aluminum foil through a developing etching process, and the copper foil is taken as an example and comprises a plurality of copper sheets 301 arranged at intervals. The vibrating diaphragm component is placed in a magnetic field, and then the circuit graph 3 is electrified, so that the circuit graph 3 is subjected to ampere force to drive the diaphragm body 2 to vibrate up and down, and finally sound is produced.
The magnetic field intensity corresponding to each position on the diaphragm body 2 is different, and the uneven stress at each position on the diaphragm body 2 easily causes the frequency and amplitude difference of each vibration of the diaphragm body 2 to be too large, and finally causes a serious sound distortion problem.
The region M in fig. 1 is a region where vibration is mainly caused by an ampere force, and the region M is described as an example. Referring to fig. 2, generally, the magnitude of the magnetic field strength of the region M is shown as a magnetic field strength curve H, and in order to make the stress at each position on the diaphragm body more uniform, the existing diaphragm assembly adopts the following technical scheme:
dividing a diaphragm body in an area M into a plurality of magnetized areas according to the magnetic field intensity; for example, the magnetic flux is divided into a magnetic receiving area A1, a magnetic receiving area A2, a magnetic receiving area A3, a magnetic receiving area A4, a magnetic receiving area A5 and the like; of course, the magnetic field may be divided into three, six, or seven magnetic regions, the principle is the same, and the following description is mainly given for the case of dividing the magnetic field into five magnetic regions;
calculating the average magnetic field intensity of each magnetized area; for example, the average magnetic field strength of the magnetized region a1 is 1H, the average magnetic field strength of the magnetized region a2 is 2H, the average magnetic field strength of the magnetized region A3 is 5H, the average magnetic field strength of the magnetized region a4 is 2H, and the average magnetic field strength of the magnetized region a5 is 1H;
calculating the width size of the corresponding copper sheet according to the average magnetic field intensity of each magnetized area, wherein the width size of the copper sheet is in direct proportion to the average magnetic field intensity of the corresponding magnetized area; for example, the width dimension of the copper sheet corresponding to the magnetized region a1 is 1L, the width dimension of the copper sheet corresponding to the magnetized region a2 is 2L, the width dimension of the copper sheet corresponding to the magnetized region A3 is 5L, the width dimension of the copper sheet corresponding to the magnetized region a4 is 2L, and the width dimension of the copper sheet corresponding to the magnetized region a5 is 1L;
developing and etching the copper foil according to the width of each copper sheet to obtain a circuit pattern comprising a plurality of copper sheets arranged at intervals; for example, the circuit pattern sequentially comprises a copper sheet B1 positioned on the magnetized region A1, a copper sheet B2 positioned on the magnetized region A2, a copper sheet B3 positioned on the magnetized region A3, a copper sheet B4 positioned on the magnetized region A4 and a copper sheet B5 positioned on the magnetized region A5; an isolation gap 302 is arranged between two adjacent copper sheets;
introducing equal current to each copper sheet, wherein the current corresponding to the unit width dimension of each copper sheet is inversely proportional to the width dimension of the copper sheet; that is, the unit width current of the copper sheet B1 is 1I, the unit width current of the copper sheet B2 is 1/2I, the unit width current of the copper sheet B3 is 1/5I, the unit width current of the copper sheet B4 is 1/2I, and the unit width current of the copper sheet B5 is 1I;
the length and the size of each copper sheet are generally equal, and the ampere force is in direct proportion to the magnetic field intensity and in inverse proportion to the current, so that the stress corresponding to the unit width and the size of each copper sheet is equal; that is, the force applied per unit width of the copper sheet B1 is 1L × 1I ═ 1F, the force applied per unit width of the copper sheet B2 is 2L × 1/2I ═ 1F, the force applied per unit width of the copper sheet B3 is 5L × 1/5I ═ 1F, the force applied per unit width of the copper sheet B4 is 2L × 1/2I ═ 1F, and the force applied per unit width of the copper sheet B5 is 1L × 1I ═ 1F.
The width size of the corresponding copper sheet is limited by the diaphragm component according to the average magnetic field intensity, so that the unit width stress of the copper sheets is equal, and a certain positive effect is achieved. However, such a solution still has the major drawback that the weight distribution of the copper foil of the diaphragm body on both sides of the isolation gap 302 is severely uneven.
For example, with an isolation gap C between magnetized region A2 and magnetized region A32-3For example, the isolation gap C2-3A copper foil is arranged in the left side in the width of 2L; isolation gap C2-3And copper foils are arranged in the width of 5L on the right, and the weight distribution of the copper foils is obviously asymmetric.
The area not covered by the circuit pattern is called as a non-copper-clad area, and the distance between two adjacent non-copper-clad areas of the conventional diaphragm assembly is obviously uneven.
The above information disclosed in this background section is only included to enhance understanding of the background of the disclosure and therefore may contain information that does not form the prior art that is currently known to one of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
One objective of the present invention is to provide a diaphragm assembly and a speaker, which can effectively solve the problem of uneven copper coating caused by an excessive distance difference between two adjacent non-copper-coated regions of the existing diaphragm assembly.
In order to achieve the above objects, in one aspect, the present invention provides a diaphragm assembly, including a diaphragm body and a circuit pattern fixed on the diaphragm body;
the diaphragm body is provided with a plurality of magnetized areas;
the circuit pattern comprises a plurality of copper sheets which are arranged in one-to-one correspondence with the magnetized areas;
an isolation gap is arranged between every two adjacent copper sheets;
at least part of the copper sheet is provided with a plurality of balance gaps which are distributed along the width direction to divide the copper sheet into a plurality of narrow strips.
Optionally, the copper sheet with the smallest width dimension is not provided with the balancing gap.
Optionally, the width dimension of each narrow strip is equal to the width dimension of the copper sheet with the smallest width dimension.
Optionally, the width dimensions of the isolation gap and the balance gap are equal.
Optionally, the width dimension of the narrow strip is greater than the width dimension of the separation gap.
Optionally, all the narrow strips belonging to the same copper sheet are arranged in parallel.
Optionally, the circuit pattern is fixedly connected to the membrane body through a bonding process.
In another aspect, there is provided a speaker including a magnet for providing a magnetic field, a circuit board for providing an electric current, and any one of the diaphragm assemblies, an end portion of the wiring pattern being electrically connected to the circuit board.
Optionally, the currents provided to the copper sheets by the circuit board at the same time are equal.
Optionally, a hollow groove is formed in the middle of the circuit board, and the membrane body is fixedly arranged in the hollow groove.
The utility model has the beneficial effects that: providing a vibrating diaphragm component and a loudspeaker, arranging balance gaps at least on part of copper sheets, and dividing wider copper sheets into a plurality of narrow strips arranged at intervals, namely, additionally arranging a plurality of balance gaps between two adjacent isolation gaps, namely additionally arranging a plurality of new non-copper-clad areas between two adjacent original non-copper-clad areas; therefore, the distance difference between two adjacent non-copper-clad areas is reduced, the copper-clad uniformity on the diaphragm body is improved, the overall smoothness and stability of the vibrating diaphragm assembly during vibration are finally improved, and sound distortion is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a diaphragm assembly provided in the prior art;
FIG. 2 is a partial schematic view of the region M in FIG. 1 provided in the background art;
fig. 3 is a schematic structural diagram of a diaphragm assembly provided in this embodiment;
fig. 4 is a partial schematic view of the region N in fig. 3.
In the figure:
1. a circuit board;
2. a diaphragm body;
3. a circuit pattern; 301. a copper sheet; 3011. balancing the gap; 3012. a narrow strip; 302. the gap is isolated.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
The utility model provides a diaphragm assembly and a loudspeaker with the diaphragm assembly. It should be noted that the loudspeaker of the present invention can be used as a vehicle speaker, a smart speaker, an earphone, or other sound equipment.
As shown in fig. 3 and 4, in the present embodiment, the diaphragm assembly is used for a loudspeaker as an example. The loudspeaker comprises a circuit board 1, a vibrating diaphragm assembly and a magnet, wherein a hollow groove is formed in the middle of the circuit board 1, the vibrating diaphragm assembly is fixedly arranged in the hollow groove, and the magnet is arranged opposite to the vibrating diaphragm assembly and used for providing a magnetic field. The vibrating diaphragm subassembly includes the diaphragm body 2 that is made by the substrate that has certain deformability such as PET macromolecular material and is the circuit figure 3 that planar structure spreads, 3 rigid couplings of circuit figure in on the diaphragm body 2.
The circuit pattern 3 in the vibrating diaphragm assembly is electrically connected with the circuit board 1, and the energized circuit pattern 3 drives the diaphragm body 2 to deform in a reciprocating manner along the thickness direction of the vibrating diaphragm assembly under the action of a magnetic field generated by the magnet, so that vibration and sound are produced.
In this embodiment, the diaphragm assembly includes a diaphragm body 2 and a circuit pattern 3 fixedly connected to the diaphragm body 2 through a bonding process.
In this embodiment, the region N is a main vibration region of the diaphragm assembly, and taking the region N as an example, the diaphragm body 2 is provided with a plurality of magnetized regions; the circuit pattern 3 comprises a plurality of copper sheets 301 which are arranged in one-to-one correspondence with the magnetized areas; an isolation gap 302 is arranged between two adjacent copper sheets 301. Compared with the existing diaphragm assembly, the key difference of the diaphragm provided in this embodiment is that at least a portion of the copper sheet 301 is provided with a plurality of balance gaps 3011 arranged along the width direction, so as to divide the copper sheet 301 into a plurality of narrow strips 3012.
In the diaphragm assembly and the loudspeaker provided by this embodiment, the balance gap 3011 is disposed at least at a part of the copper sheet 301, and the wider copper sheet 301 is divided into a plurality of narrow strips 3012 disposed at intervals, that is, a plurality of balance gaps 3011 are additionally disposed between two adjacent isolation gaps 302, which is equivalent to a plurality of new non-copper-clad regions being additionally disposed between two adjacent original non-copper-clad regions; therefore, the distance difference between two adjacent non-copper-clad areas is reduced, the copper-clad uniformity of the diaphragm body 2 is improved, the overall smoothness and stability of the vibrating diaphragm assembly during vibration are finally improved, and sound distortion is reduced.
Alternatively, the width dimension of each narrow strip 3012 may be specified based on the copper sheet 301 with the smallest width dimension, that is, the balance gap 3011 is not provided on the copper sheet 301 with the smallest width dimension, and then the width dimension of each narrow strip 3012 is made equal to the width dimension of the copper sheet 301 with the smallest width dimension. Therefore, the distance between two adjacent non-copper-clad regions can be ensured to be consistent, and the distribution uniformity of the narrow strip 3012 is improved to a certain extent.
Of course, the width of the isolation gap 302 and the width of the balance gap 3011 may be equal, that is, the distance between two adjacent narrow strips 3012 is also uniform, which further improves the uniformity of distribution of the narrow strips 3012, so that the uniformity of the stress on the diaphragm body 2 is greatly improved, and the sound distortion is obviously reduced.
Furthermore, the width dimension of the narrow strip 3012 can be made larger than the width dimension of the isolation gap 302, so as to avoid the situation of insufficient vibration force caused by excessive clearance.
In this embodiment, the copper sheets 301 are arranged in parallel, that is, the circuit board provides equal currents to the copper sheets 301 at the same time. Further, the same ends of all the narrow strips 3012 belonging to the same copper sheet 301 are conducted with each other, that is, all the narrow strips 3012 belonging to the same copper sheet 301 are also arranged in parallel. The number of the narrow strips 3012 separated by each copper sheet 301 is in direct proportion to the average magnetic field strength of the corresponding magnetized area, so that the currents passing through the narrow strips 3012 belonging to the same copper sheet 301 are the same, and the weight of each narrow strip 3012 is the same and the ampere force applied to each narrow strip 3012 is the same.
The following exemplifies the case where the number of the magnetic regions is five:
firstly, as shown in fig. 2, the diaphragm body is divided into a magnetized region a1, a magnetized region a2, a magnetized region A3, a magnetized region a4 and a magnetized region a 5; the corresponding copper sheets are marked as a copper sheet B1, a copper sheet B2, a copper sheet B3, a copper sheet B4 and a copper sheet B5 in sequence; an isolation gap 302 is arranged between every two adjacent copper sheets 301;
suppose that the average magnetic field strength of the magnetized region a1 is 1H, the average magnetic field strength of the magnetized region a2 is 2H, the average magnetic field strength of the magnetized region A3 is 5H, the average magnetic field strength of the magnetized region a4 is 2H, and the average magnetic field strength of the magnetized region a5 is 1H;
③ the copper sheet B1 and the copper sheet B5 are kept unchanged; a balance gap 3011 is formed in each of the copper sheet B2 and the copper sheet B4, so that the copper sheet B2 and the copper sheet B4 are divided into two narrow strips 3012; four balance gaps 3011 are formed in the copper sheet B3, so that the copper sheet B3 is equally divided into 5 strips 3012; wherein; the width dimensions of the copper sheet B1, each narrow strip 3012 and the copper sheet B5 are the same; the width dimensions of each balance gap 3011 and each isolation gap 302 are also equal;
after the circuit board 1 supplies equal current to the copper sheets 301, the current magnitude corresponding to each narrow strip 3012 is inversely proportional to the number of the copper sheets 301 which are separated; that is, the current of the copper sheet B1 is 1I, the current of the copper sheet B2 is 1/2I, the current of the copper sheet B3 is 1/5I, the current of the copper sheet B4 is 1/2I, and the current of the copper sheet B5 is 1I;
generally, the length of each narrow strip 3012 is equal, and since the ampere force is in direct proportion to the magnetic field intensity and in inverse proportion to the current, the narrow strips 3012 are stressed equally; that is, the stress applied to the copper sheet B1 is 1L × 1I ═ 1F, the stress applied to each strip on the copper sheet B2 is 2L × 1/2I ═ 1F, the stress applied to each strip on the copper sheet B3 is 5L × 1/5I ═ 1F, the stress applied to each strip on the copper sheet B4 is 2L × 1/2I ═ 1F, and the stress applied to each strip on the copper sheet B5 is 1L × 1I ═ 1F; further, the narrow strips 3012 have the same width and therefore the same weight.
Therefore, in the diaphragm assembly provided by this embodiment, the narrow strips 3012 between two adjacent non-copper-clad regions have the same weight and the same stress condition, and the smoothness and stability of the vibration of the diaphragm body 2 are greatly improved.
In summary, compared with the prior art, the beneficial effects of this embodiment include:
copper sheets with the same quality can be distributed with a larger area of membrane bodies, so that materials are saved;
the interval between two adjacent non-copper-clad regions is the same, so that the distance difference between the two adjacent non-copper-clad regions is reduced, the uniformity of copper cladding on the diaphragm body is improved, the integral smoothness and stability of the diaphragm assembly during vibration are finally improved, and the sound distortion is reduced;
the shape of the diaphragm body is not limited, for example, the diaphragm body can be rectangular, circular, oval or irregular polygon, corresponding magnetized areas can be obtained through reasonable area division, then wiring design is carried out, and the applicability of the diaphragm assembly is strong.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A diaphragm component comprises a diaphragm body and a circuit pattern fixedly arranged on the diaphragm body;
the diaphragm body is provided with a plurality of magnetized areas;
the circuit pattern comprises a plurality of copper sheets which are arranged in one-to-one correspondence with the magnetized areas;
an isolation gap is arranged between every two adjacent copper sheets;
it is characterized in that the preparation method is characterized in that,
at least part of the copper sheet is provided with a plurality of balance gaps which are distributed along the width direction to divide the copper sheet into a plurality of narrow strips.
2. The diaphragm assembly of claim 1 wherein the balance gap is not provided by a copper sheet having a smallest width dimension.
3. The diaphragm assembly of claim 2 wherein the width dimension of each of said narrow strips is equal to the width dimension of the copper sheet having the smallest width dimension.
4. The diaphragm assembly of claim 3 wherein the width dimensions of the isolation gap and the balance gap are equal.
5. The diaphragm assembly of claim 4 wherein the width dimension of the narrow strip is greater than the width dimension of the isolation gap.
6. A diaphragm assembly as claimed in claim 1, wherein all of said strips of the same copper sheet are arranged in parallel.
7. The diaphragm assembly of claim 1, wherein the circuit pattern is fixedly connected to the diaphragm body through a bonding process.
8. A loudspeaker comprising a magnet for providing a magnetic field, a circuit board for providing an electric current, and the diaphragm assembly of any of claims 1 to 7, wherein an end portion of the wiring pattern is electrically connected to the circuit board.
9. The loudspeaker of claim 8, wherein the circuit board provides equal current to each of the copper sheets at the same time.
10. The speaker of claim 8, wherein a hollow-out groove is formed in the middle of the circuit board, and the diaphragm body is fixedly disposed in the hollow-out groove.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121893612.XU CN215734808U (en) | 2021-08-13 | 2021-08-13 | Vibrating diaphragm subassembly and speaker |
| JP2023567014A JP2024515887A (en) | 2021-08-13 | 2021-10-18 | Diaphragm Assembly and Speaker |
| PCT/CN2021/124329 WO2023015718A1 (en) | 2021-08-13 | 2021-10-18 | Diaphragm assembly and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121893612.XU CN215734808U (en) | 2021-08-13 | 2021-08-13 | Vibrating diaphragm subassembly and speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215734808U true CN215734808U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121893612.XU Active CN215734808U (en) | 2021-08-13 | 2021-08-13 | Vibrating diaphragm subassembly and speaker |
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| CN (1) | CN215734808U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507670A (en) * | 2021-08-13 | 2021-10-15 | 北京爱德发科技有限公司 | Vibrating diaphragm subassembly and speaker |
| US11849298B2 (en) | 2021-06-11 | 2023-12-19 | Merry Electronics (Suzhou) Co., Ltd. | Diaphragm assembly and loudspeaker module |
-
2021
- 2021-08-13 CN CN202121893612.XU patent/CN215734808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11849298B2 (en) | 2021-06-11 | 2023-12-19 | Merry Electronics (Suzhou) Co., Ltd. | Diaphragm assembly and loudspeaker module |
| CN113507670A (en) * | 2021-08-13 | 2021-10-15 | 北京爱德发科技有限公司 | Vibrating diaphragm subassembly and speaker |
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