CN216905276U - Vibrating diaphragm - Google Patents
Vibrating diaphragm Download PDFInfo
- Publication number
- CN216905276U CN216905276U CN202220028063.8U CN202220028063U CN216905276U CN 216905276 U CN216905276 U CN 216905276U CN 202220028063 U CN202220028063 U CN 202220028063U CN 216905276 U CN216905276 U CN 216905276U
- Authority
- CN
- China
- Prior art keywords
- region
- diaphragm
- vibrating diaphragm
- thickness
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The utility model discloses a vibrating diaphragm, which comprises at least two diaphragm layers in a section along the thickness direction, wherein the two adjacent diaphragm layers are connected through a glue layer; overlook under the state, the vibrating diaphragm includes interior fixed part, the ring folding portion and the outer fixed part that link to each other in proper order from inside to outside, the glue film is including continuous first region and second region, the thickness in first region is greater than or is less than the thickness in second region, at least part first region is located the ring folding portion is interior. Be different from the conventional way that the glue film uniform thickness set up in traditional vibrating diaphragm, the glue film adopts the design of not uniform thickness in this vibrating diaphragm for the curved nonlinear degree of rigidity of vibrating diaphragm reduces, has improved the symmetry of vibration amplitude about the vibrating diaphragm of vibration system during operation, has improved miniature speaker's distortion phenomenon, improves miniature speaker's acoustic performance effectively.
Description
Technical Field
The utility model relates to the technical field of electroacoustic transducers, in particular to a vibrating diaphragm.
Background
At present, mobile terminals such as mobile phones and tablet computers enrich the lives of people, and a loudspeaker plays an indispensable role as an audio device. Meanwhile, the demand of consumers for sound quality is increasing, and accordingly, the performance requirements of electroacoustic converters are also increasing for practitioners in the electroacoustic converter industry.
The diaphragm is the core component of the electroacoustic transducer, and the design scheme of the diaphragm directly influences the performance of the electroacoustic transducer. In the current technical scheme of the electroacoustic transducer, most of the diaphragms are made of single-layer or multi-layer equal-layer composite materials, and the vibrating diaphragm, the voice coil and other components jointly form a vibrating system of the electroacoustic transducer. The main deformation area of the micro loudspeaker diaphragm is a corrugated rim during sound production and vibration, the rigidity is a physical quantity used for representing the relation between the stress and the displacement of a vibration system, generally, the larger the non-linearity degree of a rigidity curve is, the more serious the distortion of the micro loudspeaker is, and the lower and upper amplitude difference of the diaphragm cannot reach the standard.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: a diaphragm having a small degree of nonlinearity of a stiffness curve is provided.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a vibrating diaphragm comprises at least two film material layers in a section along the thickness direction, wherein the adjacent two film material layers are connected through an adhesive layer; overlook under the state, the vibrating diaphragm includes interior fixed part, the ring folding portion and the outer fixed part that link to each other in proper order from inside to outside, the glue film is including continuous first region and second region, the thickness in first region is greater than or is less than the thickness in second region, at least part first region is located the ring folding portion is interior.
Further, the edge portion comprises a first portion, a second portion and a third portion which are sequentially connected from inside to outside, the first portion is connected with the inner fixing portion, and the third portion is connected with the outer fixing portion.
Further, the first region is disposed corresponding to the first portion.
Further, the first region extends into the inner fixing portion.
Further, the first region is disposed corresponding to the second portion.
Further, the first region extends to the first portion and/or the third portion.
Further, the first region is disposed corresponding to the third portion.
Further, the first region extends into the outer fixing portion.
Furthermore, the first area is in a ring frame shape, and the central area of the inner fixing part is located inside the ring frame surrounded by the first area.
Furthermore, the first area is in a rib shape extending from the direction close to the central area of the inner fixing part to the direction close to the outer edge of the outer fixing part.
The utility model has the beneficial effects that: be different from the conventional way that the glue film uniform thickness set up in traditional vibrating diaphragm, the glue film adopts the design of not uniform thickness in this vibrating diaphragm for the curved nonlinear degree of rigidity of vibrating diaphragm reduces, has improved the symmetry of vibration amplitude about the vibrating diaphragm of vibration system during operation, has improved miniature speaker's distortion phenomenon, improves miniature speaker's acoustic performance effectively.
Drawings
Fig. 1 is a schematic structural diagram of a diaphragm according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a corrugated portion region of a diaphragm in an experimental group according to a first embodiment of the present invention;
fig. 3 is a cross-sectional view of a corrugated portion region of a diaphragm in a comparison group according to a first embodiment of the present invention;
fig. 4 is a graph showing a relationship between a stiffness curve of a diaphragm and a displacement in a simulation test according to a first embodiment of the present invention;
fig. 5 is a cross-sectional view of a corrugated portion area of a diaphragm according to a second embodiment of the present invention;
fig. 6 is a cross-sectional view of a corrugated portion region of a diaphragm according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a diaphragm according to a fourth embodiment of the present invention.
Description of reference numerals:
1. a film layer;
2. a glue layer; 21. a first region; 22. a second region;
3. an inner fixing portion;
4. a folded ring part; 41. a first portion; 42. a second portion; 43. a third portion;
5. an outer fixing portion.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 7, a diaphragm includes at least two film layers 1 in a cross section along a thickness direction, and two adjacent film layers 1 are connected by an adhesive layer 2; overlook the state, the vibrating diaphragm includes from inside to outside consecutive interior fixed part 3, ring folding portion 4 and outer fixed part 5, glue film 2 is including continuous first region 21 and second region 22, the thickness of first region 21 is greater than or is less than the thickness of second region 22, at least part first region 21 is located in ring folding portion 4.
From the above description, the beneficial effects of the present invention are: be different from the conventional way that glue film 2 uniform thickness set up in traditional vibrating diaphragm, glue film 2 adopts the design of not uniform thickness in this vibrating diaphragm for the curved nonlinear degree of rigidity of vibrating diaphragm reduces, has improved the symmetry of vibration amplitude about the vibrating diaphragm of vibration system during operation, has improved micro-speaker's distortion phenomenon, improves micro-speaker's acoustic performance effectively.
Further, the hinge part 4 comprises a first part 41, a second part 42 and a third part 43 which are connected from inside to outside in sequence, wherein the first part 41 is connected with the inner fixing part 3, and the third part 43 is connected with the outer fixing part 5.
Further, the first region 21 is provided corresponding to the first portion 41.
Further, the first region 21 extends into the inner fixing portion 3.
Further, the first region 21 is disposed corresponding to the second portion 42.
Further, the first region 21 extends to the first portion 41 and/or the third portion 43.
Further, the first region 21 is disposed corresponding to the third portion 43.
Further, the first region 21 extends into the outer fixing portion 5.
Further, the first area 21 is in a ring frame shape, and a central area of the inner fixing portion 3 is located inside the ring frame surrounded by the first area 21.
Further, the first region 21 is in the shape of a rib extending from a direction close to the central region of the inner fixing portion 3 to a direction close to the outer edge of the outer fixing portion 5.
As can be seen from the above description, the adjustment directions and the adjustment degrees of the vertical amplitudes of different micro speakers are different, so that the first area 21 has various installation positions and installation forms, and the designer can set the micro speaker product as required.
Example one
Referring to fig. 1 to 4, a first embodiment of the present invention is: the utility model provides a vibrating diaphragm, is applied to miniature speaker, miniature speaker includes the basin frame and locates vibration system and magnetic circuit on the basin frame, vibration system includes the voice coil loudspeaker voice coil and connects respectively the voice coil loudspeaker voice coil with the vibrating diaphragm of basin frame, magnetic circuit be used for doing the voice coil loudspeaker voice coil founds constant magnetic field.
When the diaphragm is used as a diaphragm for driving the outside air of the micro loudspeaker to produce sound, the diaphragm is a main diaphragm; when the diaphragm is positioned in the micro loudspeaker, the diaphragm is an auxiliary diaphragm; either the primary membrane or the secondary membrane may be referred to collectively as a diaphragm.
Referring to fig. 1 and fig. 2, in a cross section along a thickness direction, the diaphragm includes at least two film layers 1, and two adjacent film layers 1 are connected by an adhesive layer 2; overlook the state, the vibrating diaphragm includes from inside to outside consecutive interior fixed part 3, ring folding portion 4 and outer fixed part 5, glue film 2 is including continuous first region 21 and second region 22, the thickness of first region 21 is greater than or is less than the thickness of second region 22, at least part first region 21 is located in ring folding portion 4. It is to be understood that the central region of the inner fixing portion 3 may be a hollow region penetrating from top to bottom, or may be a solid region having a solid body.
Further, the hinge part 4 comprises a first part 41, a second part 42 and a third part 43 which are connected from inside to outside in sequence, wherein the first part 41 is connected with the inner fixing part 3, and the third part 43 is connected with the outer fixing part 5.
In this embodiment, the first region 21 is in a ring frame shape as a whole, the central region of the inner fixing portion 3 is located inside the ring frame surrounded by the first region 21, the thickness of the first region 21 is greater than that of the second region 22, the first region 21 is disposed corresponding to the first portion 41, and the first region 21 extends into the inner fixing portion 3. Of course, in other embodiments, it is also possible that the first region 21 is limited to only the first portion 41 and does not extend toward the inner fixing portion 3.
In this embodiment, the thickness of the first region 21 is larger than the thickness of the second region 22, but in other embodiments, the thickness of the first region 21 may be set smaller than the thickness of the second region 22.
In order to fully illustrate the advantages of the diaphragm of the present embodiment, the inventors performed the following simulation test:
control group (as shown in fig. 3): three tunic, the centre is glue film 2, and the both sides of glue film 2 are membrane material layer 1 respectively, and are two-layer the thickness on membrane material layer 1 is 15um respectively, and the thickness of middle glue film 2 is the 30um of uniform thickness.
Experimental groups (as shown in fig. 1 and 2): three-layer membrane, the centre is glue film 2, and the both sides of glue film 2 are film material layer 1 respectively, and are two-layer film material layer 1's thickness is 15um respectively, ring portion 4 in the second portion 42 glue film 2 regional in the third portion 43 glue film 2 regional and in the interior fixed part 3 glue film 2 regional constitution glue film 2 second region 22, the thickness of second region 22 is 30um, ring portion 4 in the first portion 41 glue film 2 regional and at least interior fixed part 3 is close to in ring portion 4's border position glue film 2 regional constitution glue film 2 first region 21, the thickness of first region 21 is 45 um.
For controlling the variables, the material of the film layer 1 in the control group is the same as that of the film layer 1 in the experimental group, and the material of the glue layer 2 in the control group is the same as that of the glue layer 2 in the experimental group, and the specific parameters are shown in table 1.
TABLE 1 vibrating diaphragm material parameter table
| Young's modulus [ MPa ]] | Density [ kg/m ^3] | Poisson ratio | |
| Film layer | 200 | 1200 | 0.33 |
| Glue layer | 25 | 1200 | 0.33 |
| Film layer | 200 | 1200 | 0.33 |
The simulation result is shown in fig. 4, where the solid line in fig. 4 is a stiffness curve of the vibration system of the comparison group, and it can be seen from fig. 4 that the stiffness amplitude at the negative displacement is smaller than that at the positive displacement, which means that the deformation of the diaphragm is larger at the negative displacement than at the positive displacement under the same applied force, which undoubtedly results in a certain Total Harmonic Distortion (THD). In fig. 4, the dotted line is a stiffness curve of the vibration system of the experimental group, and compared with the solid line, the stiffness amplitude difference of the stiffness curve shown by the dotted line is smaller when the same positive and negative displacements are performed, which means that the nonlinearity degree of the vibration system is also smaller, and on the premise that other factors are not changed, the total harmonic distortion of the vibration system of the experimental group is also reduced, so that it can be seen that the diaphragm of the experimental group can improve the acoustic performance of the micro-speaker.
Example two
Referring to fig. 5, the second embodiment of the present invention is a technical solution listed in the second embodiment, and the difference from the first embodiment is only that: the first region 21 is arranged in correspondence with the second portion 42.
Of course, the first region 21 may extend to both the first portion 41 and the third portion 43, or even to both the first portion 41 and the third portion 43.
In this embodiment, the thickness of the first region 21 is greater than the thickness of the second region 22, and in other embodiments, the thickness of the first region 21 may be less than the thickness of the second region 22.
EXAMPLE III
Referring to fig. 6, a third embodiment of the present invention is a technical solution listed in the first embodiment, and is different from the first embodiment only in that: the first region 21 is arranged in correspondence with the third portion 43.
For the same reason as the embodiment, optionally, the first region 21 extends into the outer fixing portion 5.
In this embodiment, the thickness of the first region 21 is greater than the thickness of the second region 22, and in other embodiments, the thickness of the first region 21 may be less than the thickness of the second region 22.
Example four
Referring to fig. 7, a fourth embodiment of the present invention is a technical solution listed in the first embodiment, and is different from the first embodiment only in that: the first region 21 is in the shape of a rib extending from a direction close to the central region of the inner fixing portion 3 to a direction close to the outer edge of the outer fixing portion 5.
It is easy to understand that the number of the first areas 21 is plural, in this embodiment, the first areas 21 are disposed at the corner portions of the folded ring portion 4, in other embodiments, the first areas 21 may also be disposed on the long edges or the short edges of the folded ring portion 4, and even the long edges and the short edges of the folded ring portion 4 are respectively disposed with the first areas 21.
In this embodiment, the thickness of the first region 21 is greater than that of the second region 22, so that the position of the diaphragm corresponding to the first region 21 is in a rib shape. In other embodiments, the thickness of the first region 21 may be smaller than the thickness of the second region 22, and at this time, the position of the diaphragm corresponding to the first region 21 exhibits a concave rib shape.
It is understood that the first region 21 may be disposed on at least one of the first portion 41, the second portion 42 and the third portion 43 of the hinge portion 4, and of course, the first region 21 may extend from the hinge portion 4 to the inner fixing portion 3 and/or the outer fixing portion 5.
In conclusion, the glue layer in the vibrating diaphragm provided by the utility model adopts the design of unequal thickness, so that the nonlinear degree of the rigidity curve of the vibrating diaphragm is reduced, the symmetry of the upper and lower amplitudes of the vibrating diaphragm during the working of a vibrating system is improved, the distortion phenomenon of the micro-speaker is improved, and the acoustic performance of the micro-speaker is effectively improved. The setting position and the setting mode of first region are diversified in the glue film, and the regulation demand in order to adapt to different miniature speaker products can be adjusted as required to the firm.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vibrating diaphragm comprises at least two film material layers in a section along the thickness direction, wherein the adjacent two film material layers are connected through an adhesive layer; overlook under the state, the vibrating diaphragm includes from inside to outside consecutive interior fixed part, turns over ring portion and outer fixed part, its characterized in that: the glue layer comprises a first area and a second area which are connected, the thickness of the first area is larger than or smaller than that of the second area, and at least part of the first area is located in the folding ring part.
2. The diaphragm of claim 1, wherein: the edge portion comprises a first portion, a second portion and a third portion which are sequentially connected from inside to outside, the first portion is connected with the inner fixing portion, and the third portion is connected with the outer fixing portion.
3. The diaphragm of claim 2, wherein: the first region is disposed corresponding to the first portion.
4. The diaphragm of claim 3, wherein: the first region extends into the inner fixing portion.
5. The diaphragm of claim 2, wherein: the first region is disposed corresponding to the second portion.
6. The diaphragm of claim 5, wherein: the first region extends to the first portion and/or the third portion.
7. The diaphragm of claim 2, wherein: the first region is disposed corresponding to the third portion.
8. The diaphragm of claim 7, wherein: the first region extends into the outer fixing portion.
9. The diaphragm of claim 1, wherein: the first area is in a ring frame shape, and the central area of the inner fixing part is positioned in the ring frame surrounded by the first area.
10. The diaphragm of claim 1, wherein: the first area is in a rib shape extending from the direction close to the central area of the inner fixing part to the direction close to the outer edge of the outer fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028063.8U CN216905276U (en) | 2022-01-07 | 2022-01-07 | Vibrating diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028063.8U CN216905276U (en) | 2022-01-07 | 2022-01-07 | Vibrating diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216905276U true CN216905276U (en) | 2022-07-05 |
Family
ID=82213204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220028063.8U Active CN216905276U (en) | 2022-01-07 | 2022-01-07 | Vibrating diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216905276U (en) |
-
2022
- 2022-01-07 CN CN202220028063.8U patent/CN216905276U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203301721U (en) | Loudspeaker diaphragm | |
| CN201623850U (en) | Matrix form piezoelectricity panel speaker with a weighting structure and a damping structure | |
| JP2001128284A (en) | Electroacoustic transducer | |
| CN216905276U (en) | Vibrating diaphragm | |
| CN203722806U (en) | Loudspeaker diaphragm and loudspeaker with the loudspeaker diaphragm | |
| CN207135272U (en) | Vibrating diaphragm and the loudspeaker provided with the vibrating diaphragm | |
| CN203120148U (en) | A loudspeaker | |
| CN217388986U (en) | Novel composite vibrating diaphragm | |
| CN204119493U (en) | A kind of two-way vibrating diaphragm and a kind of loadspeaker structure | |
| CN110972034A (en) | Vibrating diaphragm and sound generating device | |
| CN217388988U (en) | Interlayer diaphragm | |
| CN217389008U (en) | Electroacoustic transducer diaphragm | |
| CN205610915U (en) | Vibrating diaphragm and be equipped with micro - generator of this vibrating diaphragm | |
| CN217388987U (en) | Concatenation vibrating diaphragm, miniature speaker monomer and speaker module | |
| CN106060730A (en) | Method for lowering ultra-thin loudspeaker distortion | |
| CN209201322U (en) | Microphone device | |
| CN114422921A (en) | Interlayer diaphragm | |
| US11146889B2 (en) | Diaphragm | |
| US20090046888A1 (en) | Speaker | |
| CN206365023U (en) | The speaker diaphragm and loudspeaker of cone basin formula | |
| CN206196039U (en) | Vibrating diaphragm and including vocal ware of this vibrating diaphragm | |
| CN206596211U (en) | The speaker diaphragm and loudspeaker of cone basin formula | |
| CN213213846U (en) | Vibrating diaphragm and loudspeaker | |
| CN216146454U (en) | Vice membrane structure and big amplitude speaker | |
| CN213586290U (en) | High-performance micro loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |