CN110830888A - Vibrating diaphragm and sounder monomer comprising same - Google Patents
Vibrating diaphragm and sounder monomer comprising same Download PDFInfo
- Publication number
- CN110830888A CN110830888A CN201911102325.XA CN201911102325A CN110830888A CN 110830888 A CN110830888 A CN 110830888A CN 201911102325 A CN201911102325 A CN 201911102325A CN 110830888 A CN110830888 A CN 110830888A
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- diaphragm
- sounder
- edge
- fixed
- fixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a vibrating diaphragm and a sounder monomer comprising the same, and relates to the technical field of electroacoustic products. The diaphragm comprises a central part, a corrugated part arranged around the central part and a fixing part integrally arranged with the corrugated part; the fixing part comprises a vertical part which extends downwards from the outer side edge of the folded ring part; the invention also discloses a sounder monomer comprising the vibrating diaphragm. The vibrating diaphragm and the sounder monomer comprising the same can obviously increase the effective vibration area of the vibrating diaphragm and improve the acoustic performance of sounder products.
Description
Technical Field
The invention relates to the technical field of electroacoustic products. And more particularly, to a diaphragm and a sounder unit including the same.
Background
The sound generator is an important acoustic component of the portable electronic device, is used for completing the conversion between an electric signal and a sound signal, and is an energy conversion device. The miniature sounder generally comprises a sounder shell, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are accommodated in the sounder shell; the vibration system comprises a vibrating diaphragm and a voice coil, wherein the voice coil surrounds the periphery of the central magnet and the central magnetic conduction plate and does up-and-down magnetic line cutting motion along with alternating audio signals passing through the voice coil, so that the vibrating diaphragm is driven to drive air to sound.
With the miniaturization development of electronic devices such as mobile phones, the size design of the sound generator is more and more challenging. The edge of the folded ring part of the vibrating diaphragm of the traditional sounder extends outwards to form a fixed part for fixing with the sounder shell, so that the size of the vibrating diaphragm in the X-axis direction and the Y-axis direction is larger, but the effective vibration area (Sd) of the vibrating diaphragm is smaller, and the acoustic performance of the sounder is influenced; in practical application of the acoustic generator module, the structure of the fixing portion has more limitations on the design of the signal leading-out structure. If when reducing the size of vibrating diaphragm fixed part, will influence the bonding strength between vibrating diaphragm and the casing, influence the wholeness ability of sounder.
Disclosure of Invention
An object of the present invention is to provide a diaphragm having a novel structure, which can significantly increase the effective vibration area of the diaphragm.
Another object of the present invention is to provide a sounder unit including the above diaphragm, which can significantly increase the effective vibration area of the diaphragm and improve the acoustic performance of the product.
In order to achieve the first purpose, the invention adopts the following technical scheme:
a diaphragm comprises a central part, a corrugated part arranged around the central part and a fixing part integrally arranged with the corrugated part;
the fixing part at least comprises a vertical part which extends downwards from the outer side edge of the folded ring part.
In addition, it is preferable that the fixing portion further includes a straight portion formed by bending a bottom edge of the vertical portion inward.
Further, it is preferable that an inner side edge of the straight portion is located outside the central portion edge.
According to a second object of the present invention, there is also provided a sounder unit comprising a vibration system and a magnetic circuit system; the vibration system comprises the diaphragm;
the sounder monomer also comprises a shell with a containing space; the fixed part of the vibrating diaphragm is fixedly combined with the shell.
Furthermore, it is preferable that the magnetic circuit system includes at least a magnetic yoke and a plurality of side magnetic circuit portions on the magnetic yoke; the side magnetic circuit part comprises a side magnet and a side magnetic conducting plate which is combined and fixed above the side magnet;
the magnetic circuit system constitutes the housing that houses and fixes the vibration system; and the fixed part of the vibrating diaphragm is fixedly combined with the side magnetic conduction plate.
In addition, the preferable scheme is that the side magnetic conduction plate comprises an annular boss formed by upward extending of part of the upper end surface of the side magnetic conduction plate, and the fixing part of the diaphragm is fixedly combined with the annular boss.
In addition, the preferable scheme is that the sounder unit further comprises a backing ring fixed at the upper end face of the housing, the backing ring is located on the inner side of the vibrating diaphragm fixing portion, and the backing ring is attached and fixed with the inner side wall face of the fixing portion.
In addition, preferably, the fixing portion of the diaphragm further includes a straight portion formed by bending the bottom edge of the vertical portion inward; the straight portion is configured and fixed between the backing ring and the upper end surface of the shell.
In addition, it is preferable that an inner side wall surface of the backing ring does not exceed an inner side edge of the straight portion; the top surface of the grommet is no higher than the top edge of the upright portion.
In addition, it is preferable that the housing includes an extension portion extending beyond an outer wall surface of the diaphragm; the extension part is of an integral annular structure, or the extension part is a part of the shell, which exceeds four corners of the diaphragm.
The invention has the following beneficial effects:
the vibrating diaphragm provided by the invention is provided with a novel fixing part structure, and due to the structural design of the fixing part, the design of the corrugated ring part of the vibrating diaphragm in the X, Y axis direction can be extended to the edge of a sounder product, so that the effective vibration area of the vibrating diaphragm can be obviously increased on the basis of not changing the original size of the sounder, and the acoustic performance of the sounder is improved. On the other hand, when the diaphragm assembly with the structure is applied to the sounder module, the structure of the diaphragm fixing part has less limitation on the design of the signal leading-out structure, and more possibilities are provided for the design of the signal leading-out structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is understood that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived by those skilled in the art without inventive step.
Fig. 1 shows a schematic structural view of a sounder unit according to a preferred embodiment of the present invention.
Fig. 2 shows a schematic top view of fig. 1.
Fig. 3 shows a schematic longitudinal sectional structure of fig. 1.
Fig. 4 shows a partially enlarged schematic structure at a in fig. 3.
Fig. 5 shows an exploded view of the sounder unit of fig. 1.
Description of reference numerals: 1. a vibration system; 11. vibrating diaphragm; 111. a central portion; 112. a folded ring part; 113. a fixed part; 1131. a vertical portion; 1132. a straight portion; 114. a reinforcing part; 12. a backing ring; 13. a voice coil; 2. a magnetic circuit system; 21. a central magnet; 22. a side magnet; 23. a side magnetic conductive plate; 231. a boss; 232. an extension portion; 24. a central magnetic conduction plate.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the acoustic generator in the prior art, the edge of the diaphragm at the corrugated rim portion extends outward to form a fixing portion for fixing with the acoustic generator housing, so that the size of the diaphragm in the X and Y axis directions is large, but the effective vibration area (Sd) of the diaphragm is small, and the acoustic performance of the acoustic generator is also affected; in practical application of the acoustic generator module, the structure of the fixing portion has more limitations on the design of the signal leading-out structure. Based on the technical problems in the prior art, the invention provides a vibrating diaphragm with a novel structure and a sounder monomer comprising the vibrating diaphragm.
Specifically, the following detailed description is made with reference to the accompanying drawings. Fig. 1 shows a schematic structural view of a sounder unit according to a preferred embodiment of the present invention. Fig. 2 shows a schematic top view of fig. 1. Fig. 3 shows a schematic longitudinal sectional structure of fig. 1. Fig. 4 shows a partially enlarged schematic structure at a in fig. 3. Fig. 5 shows an exploded view of the sounder unit of fig. 1.
As shown in fig. 1 to 5, the present invention provides a diaphragm 11; the diaphragm 11 includes a central portion 111, a folded ring portion 112 disposed around the central portion 111, and a fixing portion 113 disposed integrally with the folded ring portion 112; the fixing portion 113 at least includes a vertical portion 1131 extending downward from the outer edge of the folded ring portion 112.
In this embodiment, the fixing portion further includes a straight portion 1132 formed by bending the bottom edge of the vertical portion 1131 inward. As will be understood by those skilled in the art, when the fixing portion 113 only includes the vertical portion 1131, the diaphragm fixing portion 113 is fixed to the sidewall of the sounder single body housing by the vertical portion 1131; when the fixing portion 113 includes the vertical portion 1131 and the straight portion 1132, the diaphragm fixing portion 113 is fixed to the upper end surface of the sounder single body housing by the straight portion 1132.
Further, vertical portion 1131 and horizontal plane mutually perpendicular, straight portion 1132 and horizontal plane are parallel to each other, promptly vertical portion 1131 by the vertical downwardly extending of outside border of dog-ear portion forms, straight portion 1132 is by the vertical inside bending type in bottom border of vertical portion 1131 forms, and this kind of structure more is favorable to the vibration of vibrating diaphragm, and it is fixed to be convenient for combine between vertical portion 1131 or straight portion 1132 and the sounder casing simultaneously.
The vibrating diaphragm 11 provided by the invention is provided with a novel fixing part 113 structure, the fixing part 113 does not directly extend outwards as in the prior art, but extends downwards from the folded ring part 112 and bends inwards vertically, the fixing part 113 with the structure not only can meet the connection and fixing relationship between the vibrating diaphragm 11 and the sounder shell, but also can ensure that the design of the folded ring part 112 of the vibrating diaphragm 11 in the X, Y axis direction extends to the edge of the sounder product, so that the effective vibration area of the vibrating diaphragm 11 is obviously increased on the basis of not changing the original size of the sounder, and the acoustic performance of the sounder is improved. On the other hand, when the diaphragm assembly with the structure is applied to a sounder module, the structure of the fixing portion 113 of the diaphragm 11 has less limitation on the design of the signal leading-out structure, so that more possibilities are provided for the design of the sounder signal leading-out structure.
The direction from the bending part 112 of the diaphragm 11 toward the center point of the central part 111 of the diaphragm 11 is defined as inner, and the opposite direction is defined as outer. In the preferred embodiment, as shown in fig. 3 and 4, the inner side edge of the straight portion 1132 is located outside the outer side edge of the central portion 111, and this structure design can avoid the straight portion 1132 from interfering with the vibration of the diaphragm 11, and in addition, the whole volume and mass of the diaphragm 11 can be reduced as much as possible while the connection and fixation function of the straight portion 1132 and the sounder housing is satisfied. The specific size of the straight portion 1132 may be selected by those skilled in the art within the range that can be realized, and the present invention is not particularly limited thereto.
Further, as shown in the drawings, similarly to the structure of the diaphragm 11 in the related art, the diaphragm 11 further includes a reinforcing portion 114 fixed to a surface of the central portion 111; the center of the central part 111 of the diaphragm 11 is hollowed, and the reinforcing part 114 covers the hollowed area; alternatively, in another possible implementation of the present invention, the central portion of the diaphragm is left, and the reinforcing portion is bonded to the central portion of the diaphragm.
In another aspect, the present invention further provides a sounder unit, which includes a vibration system 1 and a magnetic circuit system 2; the vibration system 1 comprises the diaphragm as described above, and a voice coil 13 fixed on the surface of the diaphragm 11 near the magnetic circuit system 2; the sounder monomer also comprises a shell with a containing space; the fixing portion 113 of the diaphragm 11 is fixed to the housing. The effective vibration area of the vibration film 11 of the sounder monomer with the vibration film is obviously increased, so that the sounding performance of the sounder monomer is improved.
In the present preferred embodiment, as shown in the drawings, the housing of the sounder unit is formed as follows. The magnetic circuit system 2 includes: the magnetic circuit comprises a magnetic conducting yoke and a plurality of side magnetic circuit parts positioned on the magnetic conducting yoke; the side magnetic circuit part comprises a side magnet 22 and an annular side magnetic conduction plate 23 which is combined and fixed above the side magnet 22; further preferably, the magnetic circuit system 2 further includes a central magnet 21 located on the magnetic yoke and a central magnetic conductive plate 24 located on one side of the central magnet 21 close to the vibration system 1; the magnetic circuit system constitutes the housing that houses and fixes the vibration system; the fixing portion 113 of the diaphragm 11 is fixedly combined with the annular edge magnetic conduction plate 23.
In this embodiment, it is further preferable that the side magnetic conductive plate 23 includes an annular boss 231 formed by extending upward a part of the upper end surface of the side magnetic conductive plate 23, and the straight portion 1132 of the fixing portion 113 of the diaphragm 11 is fixed to the upper end surface of the annular boss 231. The annular boss 231 is provided to increase the volume of the back cavity of the sounder while leaving sufficient vibration space in the back cavity for the diaphragm 11 to vibrate. As shown in the figure, the annular boss 231 in this embodiment is formed by extending upward a part of the upper end of the outer edge of the magnetic edge conducting plate 23. In other possible embodiments, the annular boss 231 may also be formed by extending a portion of the upper end surface of the edge magnetic plate 23 upward, that is, the annular boss 231 is located at a middle position or an inner position of the upper end surface of the edge magnetic plate 23.
Further preferably, the sounder unit further includes a backing ring 12 fixed to the upper end surface of the housing, the backing ring 12 is located inside the fixing portion 113 of the diaphragm 11, and the backing ring 12 is fixed to the inner side wall surface of the fixing portion 113 in a fitting manner. The grommet 12 may extend upward from the upper end of the housing, be integrally formed with the housing, or be a separate component, be fixed to the upper end of the housing by bonding or other connecting and fixing means well known in the art, and the present embodiment is not limited thereto. The setting of backing ring 12 can play the effect of supporting to book ring portion 112 and fixed part 113 of vibrating diaphragm 11, promotes the overall structure intensity of vibrating diaphragm 11, prevents vibrating diaphragm 11 at the in-process of repeated vibration because the not enough functional defect that leads to of intensity.
In this preferred embodiment, the fixing portion 113 of the diaphragm 11 further includes a straight portion 1132 formed by bending the bottom edge of the vertical portion 1131 inward; as shown in fig. 3-4, the backing ring 12 is a separate component, and the straight portion 1132 is configured and fixed between the backing ring 12 and the upper end surface of the housing. It should be further noted that, in other preferred embodiments of the present invention, when the diaphragm fixing portion does not include the straight portion, the backing ring may be integrally disposed with the housing, or the backing ring is a separate component and directly fixed on the upper end surface of the housing, and the vertical portion of the diaphragm is attached and fixed to the side wall surface of the housing.
In order to avoid the interference of the setting of the backing ring 12 on the vibration of the diaphragm 11 and influence the vibration of the diaphragm 11, preferably, an avoidance space is left between the backing ring 12 and the inner side wall surface of the bending ring part 112 in the present embodiment. In the implementation mode of the invention, the size of the avoidance space can be selected by a person skilled in the art according to actual needs.
More specifically, in the preferred embodiment, the inner side wall surface of the backing ring 12 does not exceed the inner side edge of the straight portion 1132, as shown in the figure, the backing ring 12 is flush with the inner side edge of the straight portion 1132; the top surface of backing ring 12 is not higher than the top edge of vertical portion 1131, as shown in the figure, the top surface of backing ring 12 and the top edge of vertical portion 1131 set up flushly, and this kind of design can make full use of the space that fixed part 113 formed, when satisfying backing ring 12 and supporting intensity, avoid backing ring 12 to take place to interfere when vibrating diaphragm 11 vibrates.
Furthermore, it will be appreciated by those skilled in the art that the grommet 12 and the fixing portion 113 of the diaphragm 11 may be fixed by glue bonding or other fixing methods commonly used in the art to enhance the integrity and overall strength of the diaphragm assembly.
Preferably, in this embodiment, the backing ring 12 is a continuous ring structure embedded inside the fixing portion 113 of the diaphragm 11, so as to sufficiently support the fixing portion 113 of the diaphragm 11; the material of the backing ring 12 can be selected from a metal material or a non-metal material. Further, the forming mode of the backing ring 12 is die forming, punch forming or die cutting forming, and those skilled in the art can select the forming mode according to actual needs.
In the preferred embodiment, as shown in fig. 2, the side magnetic plate 23 includes an extension 232 extending beyond the outer wall surface of the diaphragm 11; the extensions 232 are portions of the housing that extend beyond the four corners of the diaphragm 11. The extension 232 is arranged for the mutual matching between the sounder monomer and the sounder module housing, and when the sounder monomer with the vibrating diaphragm assembly is used in the sounder module, the extension 232 can be matched with the module housing to position the sounder monomer in the axial direction of the sounder module, so that the sounder monomer is prevented from shifting in the sounder module housing.
In other realizable embodiments of the present invention, the extension portion may also be an integrated ring structure, that is, the outer edge of the side magnetic plate is located outside the outer wall surface of the diaphragm, and an annular extension portion is left between the outer edge of the side magnetic plate and the outer wall surface of the diaphragm. The function of the extension part is the same as that of the extension part in the present embodiment, and further description is omitted here.
In another preferred embodiment of the present invention, the casing of the sounder may be a separately provided housing for accommodating the vibration system and the magnetic circuit system, in which case the fixed portion of the diaphragm is fixed in combination with the housing; similarly, the shell comprises an extension part which exceeds the outer side wall surface of the vibrating diaphragm; the extension part is of an integral annular structure, or the extension part is a part of the shell, which exceeds four corners of the diaphragm. Further preferably, the housing includes an annular boss formed by extending upward from a part of the upper end surface of the housing, the flat portion of the diaphragm fixing portion is fixedly combined with the upper end surface of the annular boss, and the specific position of the annular boss on the upper end surface of the housing is not further limited.
When the sounder monomer provided by the invention is applied to a sounder module, the sounder monomer is configured in a module shell, and a person skilled in the art can glue the periphery of the sounder monomer to seal a front sound cavity and a rear sound cavity.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A diaphragm is characterized by comprising a central part, a corrugated part arranged around the central part and a fixing part integrally arranged with the corrugated part;
the fixing part at least comprises a vertical part which extends downwards from the outer side edge of the folded ring part.
2. The diaphragm of claim 1, wherein the fixing portion further includes a straight portion formed by bending a bottom edge of the vertical portion inward.
3. The diaphragm of claim 2 wherein the inner side edge of the flat portion is located outside the center portion edge.
4. A sounder monomer comprising a vibration system and a magnetic circuit system; the vibration system includes the diaphragm of claim 1;
the sounder monomer also comprises a shell with a containing space; the fixed part of the vibrating diaphragm is fixedly combined with the shell.
5. The sounder cell according to claim 4, wherein the magnetic circuit system comprises at least a magnetic yoke and a plurality of side magnetic circuit portions on the magnetic yoke; the side magnetic circuit part comprises a side magnet and an annular side magnetic conduction plate which is combined and fixed above the side magnet;
the magnetic circuit system constitutes the housing that houses and fixes the vibration system; and the fixed part of the vibrating diaphragm is fixedly combined with the annular edge magnetic conduction plate.
6. The sounder unit according to claim 5, wherein the edge magnetic conductive plate includes an annular boss formed by extending upward a portion of an upper end of the edge magnetic conductive plate, and the fixing portion of the diaphragm is fixed to the annular boss.
7. The sounder unit according to claim 4, further comprising a backing ring fixed to an upper end surface of the housing, wherein the backing ring is located inside the fixing portion of the diaphragm, and the backing ring is fixed to an inner side wall surface of the fixing portion in a fitting manner.
8. The sounder unit according to claim 7, wherein the fixing portion of the diaphragm further comprises a straight portion formed by bending a bottom edge of the vertical portion inward; the straight portion is configured and fixed between the backing ring and the upper end surface of the shell.
9. A sounder unit according to claim 8, wherein the inner side wall face of the grommet does not extend beyond the inner side edge of the flat; the top surface of the grommet is no higher than the top edge of the upright portion.
10. The sounder unit according to claim 4, wherein the housing includes an extension extending beyond an outer wall surface of the diaphragm; the extension part is of an integral annular structure, or the extension part is a part of the shell, which exceeds four corners of the diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102325.XA CN110830888A (en) | 2019-11-12 | 2019-11-12 | Vibrating diaphragm and sounder monomer comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911102325.XA CN110830888A (en) | 2019-11-12 | 2019-11-12 | Vibrating diaphragm and sounder monomer comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN110830888A true CN110830888A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911102325.XA Pending CN110830888A (en) | 2019-11-12 | 2019-11-12 | Vibrating diaphragm and sounder monomer comprising same |
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| CN (1) | CN110830888A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935616A (en) * | 2020-06-30 | 2020-11-13 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
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| US20020148678A1 (en) * | 2001-04-17 | 2002-10-17 | Sahyoun Joseph Y. | Acoustic radiator with a baffle of a diameter at least as large as the opening of the speaker enclosure to which it is mounted |
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| CN111935616A (en) * | 2020-06-30 | 2020-11-13 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN111935616B (en) * | 2020-06-30 | 2022-03-29 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
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Application publication date: 20200221 |