CN110972034B - Vibrating diaphragm and sound generating device - Google Patents
Vibrating diaphragm and sound generating device Download PDFInfo
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- CN110972034B CN110972034B CN201911095956.3A CN201911095956A CN110972034B CN 110972034 B CN110972034 B CN 110972034B CN 201911095956 A CN201911095956 A CN 201911095956A CN 110972034 B CN110972034 B CN 110972034B
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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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
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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
Abstract
The invention provides a vibrating diaphragm, which comprises at least one layer of amorphous polyether-ether-ketone material, and comprises a central part, a folded ring part and a fixed part, wherein the crystallized vibrating diaphragm is provided with folds; the central part is provided with a plurality of first reinforcing ribs, the fixing part is provided with a plurality of second reinforcing ribs, the extending directions of the first reinforcing ribs and the second reinforcing ribs are the same, and the extending directions of the first reinforcing ribs and the second reinforcing ribs correspond to the integral extending direction of the folds; a plurality of first strengthening ribs are parallel to each other, and a plurality of second strengthening ribs are parallel to each other. According to the invention, the first reinforcing rib and the second reinforcing rib are arranged, so that the influence on the performance of the vibrating diaphragm after crystallization of the amorphous polyether-ether-ketone is obviously reduced, and the adhesive force of the vibrating diaphragm is increased. Meanwhile, the problem of segmentation vibration is reduced, and the overall acoustic performance of the vibrating diaphragm is improved.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a vibrating diaphragm and a sound production device.
Background
As a device capable of converting electric energy into sound energy, a speaker has been widely used in mobile terminals such as mobile phones, computers, pads, and the like. The sound reproduction effect of the terminal device can be directly influenced by the quality of the loudspeaker performance; the requirement of the diaphragm as one of the key parts for the sound production of the speaker is higher and higher, the diaphragm gradually develops towards high strength, high sound quality and low distortion, and the structural requirement of the diaphragm of the speaker is also more severe. Polyether ether ketone raw and other materials commonly used in present vibrating diaphragm are mostly the better non-crystallization material of vibrating diaphragm shaping effect, because the voice coil loudspeaker voice coil circular telegram after can generate heat when vibrating in the magnetic gap, need force the crystallization with non-crystallization polyether ether ketone in order to promote the heat resistance of vibrating diaphragm. However, in the crystallization process of the amorphous polyetheretherketone, glass transition occurs at about 143 ℃, molecular chains are rearranged in the process, and the reconfiguration of the molecular chains causes deformation of the material and shrinkage. Due to the shrinkage of the amorphous polyetheretherketone during the crystallization process, irregular folds are formed after the amorphous polyetheretherketone material is crystallized. The modulus of amorphous polyetheretherketone is very different between the 0 ° direction and the 90 ° direction, resulting in shrinkage in one direction, and the corresponding wrinkle texture after crystallization also extends substantially in one direction. However, the wrinkles generated after crystallization are not generated only by a single layer of amorphous polyetheretherketone material, but also irregular wrinkles generated in the whole composite diaphragm after crystallization for the composite diaphragm containing at least one layer of amorphous polyetheretherketone. The crystallized amorphous polyether-ether-ketone vibrating diaphragm generates irregular wrinkle textures, part of wrinkles have enough depth to contain glue, the depth of the part of wrinkles is small, the glue cannot be effectively soaked, the integral wetting effect of the amorphous polyether-ether-ketone is influenced, the wetting effect and the bonding force of the surface, which is glued and bonded by the peripheral fixing part and the vibrating diaphragm supporting part and the central part and the hard composite layer, are further influenced, and the waterproof and air-tight effects are caused. In addition, when the diaphragm vibrates, the irregular surface wrinkles generate slight segmentation vibration, which reduces the sound quality rate and affects the overall performance of the speaker.
In view of the above, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a new technical scheme of a vibrating diaphragm and a sound generating device.
According to a first aspect of the invention, there is provided a diaphragm comprising at least one layer of amorphous polyetheretherketone material, comprising:
the central part is positioned in the central position of the diaphragm;
a folded ring portion disposed around a periphery of the central portion;
the fixing part surrounds the periphery of the folded ring part, and is configured to be fixedly connected with a supporting part outside the vibrating diaphragm;
the crystallized diaphragm is provided with folds; the central part is provided with a plurality of first reinforcing ribs, the fixing part is provided with a plurality of second reinforcing ribs, the extending directions of the first reinforcing ribs and the second reinforcing ribs are the same, and the extending directions of the first reinforcing ribs and the second reinforcing ribs correspond to the integral extending direction of the wrinkles;
the first reinforcing ribs are parallel to each other, and the second reinforcing ribs are parallel to each other.
Optionally, the first reinforcing rib and the second reinforcing rib are both of a convex structure or a concave structure; or one of the first reinforcing rib and the second reinforcing rib is of a convex structure, and the other one of the first reinforcing rib and the second reinforcing rib is of a concave structure.
Optionally, the width of the first reinforcing rib and the width of the second reinforcing rib are 0.05mm to 0.15 mm.
Optionally, the first reinforcing rib and the second reinforcing rib have a protrusion height or a depression depth of 0.01mm to 0.2 mm.
Optionally, the height of the first reinforcing rib and the depth of the second reinforcing rib is greater than the average depth of the corrugations of the diaphragm.
Optionally, the first reinforcing ribs are uniformly distributed on the central portion, and a distance between two adjacent first reinforcing ribs is 0.5mm to 1.5 mm.
Optionally, the second reinforcing ribs are uniformly distributed on the fixing portion, and a distance between two adjacent second reinforcing ribs is 0.3mm-1.5 mm.
Optionally, the distance between the first reinforcing rib and the folded ring part, which are parallel to and adjacent to the folded ring part, is 0.05mm-0.1 mm.
Optionally, the distance between the end part of each first reinforcing rib and the folded ring part is equal and is 0.05mm-0.1 mm.
Optionally, one end of a part of the second reinforcing ribs is arranged opposite to the edge folding part, and the distance between the end and the edge folding part is 0.05mm-0.15 mm.
Optionally, the nearest distance between the other part of the second reinforcing ribs and the folded ring part in the parallel direction is 0.05mm-0.15 mm.
Optionally, the diaphragm is of a rectangular structure, and the extending directions of the first reinforcing rib and the second reinforcing rib are parallel to the long axis of the diaphragm; alternatively, the first and second electrodes may be,
the extending direction of the first reinforcing rib and the second reinforcing rib is parallel to the short axis of the diaphragm.
Optionally, a composite layer is bonded to the central portion.
According to another aspect of the present invention, there is provided a sound-generating device comprising a diaphragm as described above.
According to the invention, the first reinforcing rib and the second reinforcing rib are arranged at the positions (the central part and the fixing part) where the vibrating diaphragm needs to be combined with other parts, so that the influence of irregular folds after crystallization of the amorphous polyether-ether-ketone on the performance of the vibrating diaphragm is obviously reduced, the irregular surface folds are distributed regularly and uniformly, the defect of reduction of the bonding force of the vibrating diaphragm caused by the irregular folds of the amorphous polyether-ether-ketone is eliminated, and the bonding force of the vibrating diaphragm containing the amorphous polyether-ether-ketone is increased. The problem of bubbles and uneven bonding generated when the hard composite layer is glued and bonded at the center of the vibrating diaphragm is avoided, the gluing and bonding uniformity and bonding force of the fixing part and the supporting parts such as the shell are also ensured, and the problem of water resistance and air tightness of the loudspeaker caused by the bonding problem is avoided. Meanwhile, due to the fact that the regular reinforcing ribs are arranged on the surface of the amorphous polyether-ether-ketone, the problem of segmentation vibration caused by the wrinkle problem is reduced, the listening yield is improved, and the overall acoustic performance of the vibrating diaphragm is improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a diaphragm according to the present invention;
fig. 2 is a schematic structural diagram of a diaphragm according to a second embodiment of the present invention.
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, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be 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.
Referring to fig. 1 and 2, according to an embodiment of the present invention, a diaphragm is provided, where the diaphragm includes at least one layer of amorphous polyetheretherketone material, and the combination of high strength, resilience, damping, temperature resistance, and the like is provided. Specifically, the diaphragm may be a single-layer peek material, or a composite material of multiple layers of peek and an adhesive layer, or the diaphragm may be a composite material of peek and other polymer materials/rubbers, such as a composite material of peek and thermoplastic polyurethane/rubber, and after the amorphous peek material is crystallized (the composite diaphragm is obtained by compounding multiple layers of materials and then crystallizing the amorphous peek), the diaphragm may have irregular wrinkles. The vibrating diaphragm comprises a central part 1, a corrugated ring part 2 and a fixing part 3; the central part 1 is positioned at the central position of the vibrating diaphragm, and in order to reduce the possibility that the vibrating diaphragm generates segmentation vibration in a high-frequency section, a hard composite layer is combined on the central part 1, the composite layer is not easy to deform, and the segmentation vibration can be reduced so as to improve the high-frequency performance of the vibrating diaphragm; the folded ring part 2 is arranged around the periphery of the central part 1; the fixing portion 3 surrounds the outer periphery of the edge portion 2, and the fixing portion 3 is configured to be fixedly connected with a supporting member outside the diaphragm, such as a housing or a supporting ring for fixedly supporting the diaphragm. The shape of the diaphragm can be a runway shape, a rectangle or an ellipse, and the specific shape of the diaphragm can be designed according to actual needs. Preferably, a hard ball top is further bonded to the center portion 1 of the diaphragm as a reinforcing portion for adjusting the acoustic performance of the diaphragm.
Because amorphous polyether ether ketone produces irregular fold easily in the crystallization process, the extending direction of fold is roughly the same, because the irregular structure of fold influences the surface wetting effect and the adhesive force that the vibrating diaphragm rubber coating bonded, leads to waterproof gas tightness to become invalid, influences the fastness and the water-proof effects of the bonding of vibrating diaphragm and other parts. As an improvement, in the diaphragm provided in the embodiment of the present invention, a plurality of first reinforcing ribs 11 are provided on the central portion 1 to be bonded to the composite layer, and a plurality of second reinforcing ribs 31 are provided on the fixing portion 3 to be fixedly bonded to the support member, where the first reinforcing ribs 11 are regularly distributed and the second reinforcing ribs 31 are also regularly distributed.
In the present embodiment, the first beads 11 and the second beads 31 extend in the same direction, and both correspond to the direction in which the amorphous polyether ether ketone itself is wrinkled. For a diaphragm with a rectangular structure, when the extending direction of the corrugation of the amorphous polyetheretherketone is generally distributed along the horizontal direction, i.e. along the direction parallel to the long axis of the rectangular diaphragm, the first reinforcing rib 11 and the second reinforcing rib 31 also need to extend along the horizontal direction, i.e. along the direction parallel to the long axis of the rectangular diaphragm, i.e. the first reinforcing rib 11 and the second reinforcing rib 12 are regularly distributed, as shown in fig. 1, but the corrugation of the amorphous polyetheretherketone itself is irregularly distributed. When the extending directions of the folds of the polyetheretherketone are generally distributed along the vertical direction, that is, along the direction parallel to the short axis of the rectangular diaphragm, the first reinforcing rib 11 and the second reinforcing rib 31 also extend along the vertical direction, that is, along the direction parallel to the short axis of the rectangular diaphragm, as shown in fig. 2. It should be noted that the above-mentioned "horizontal" or "vertical" direction is based on the structure shown in the figure. The direction of extension of the ribs is determined by the properties of the material itself and should coincide with the overall direction of extension of the pleats themselves: when the corrugations extend in the horizontal direction as shown in fig. 1, the extending direction of the reinforcing ribs should also be the horizontal direction; when the corrugations extend in the vertical direction as shown in fig. 2, the extending direction of the reinforcing ribs should also be the vertical direction; for the structure that the whole folds extend obliquely (i.e. do not extend in the horizontal or vertical direction) after the diaphragm material containing amorphous polyether-ether-ketone is cut, the arrangement direction of the reinforcing ribs should also be the same oblique direction.
Preferably, the first reinforcing ribs 11 arranged adjacently are parallel to each other and have the same interval, and the second reinforcing ribs 31 arranged adjacently are also parallel to each other and have the same interval, so that the reinforcing ribs can be distributed more regularly, and the adverse effects caused by the folds of the amorphous polyetheretherketone can be reduced.
In the embodiment, the first reinforcing rib 11 and the second reinforcing rib 31 are arranged at the positions where the diaphragm needs to be combined with other parts, so that the influence of irregular wrinkles after crystallization of the amorphous polyether-ether-ketone on the performance of the diaphragm is obviously reduced, the irregular surface wrinkles are regularly and uniformly distributed, the defect of reduction of the adhesive force of the diaphragm caused by the irregular wrinkles of the amorphous polyether-ether-ketone is overcome, and the adhesive force of the diaphragm containing the amorphous polyether-ether-ketone is increased. The problems of air bubbles and uneven bonding generated when the vibration diaphragm central part 1 is glued and bonded with the hard composite layer are avoided, the gluing and bonding uniformity and bonding force of the fixing part 3 and supporting parts such as a shell are ensured, and the problem of water tightness and air tightness of the loudspeaker caused by the bonding problem is avoided. Meanwhile, due to the fact that the regular reinforcing ribs are arranged on the surface of the amorphous polyether-ether-ketone, the problem of segmentation vibration caused by the wrinkle problem is reduced, the listening yield is improved, and the overall acoustic performance of the vibrating diaphragm is improved.
In one embodiment, the first reinforcing rib 11 and the second reinforcing rib 31 are both convex structures or both concave structures; or one of the first reinforcing ribs 11 and the second reinforcing ribs 31 has a convex structure and the other has a concave structure. The convex structure or the concave structure can play a role in reducing the wrinkle texture on the surface of the diaphragm; a concave structure can be realized on the vibrating diaphragm by arranging the convex structure at the corresponding position of the die, or the convex structure can be realized on the vibrating diaphragm by arranging the concave structure at the corresponding position of the die.
In one embodiment, the width of the first reinforcing rib 11 and the second reinforcing rib 31 is 0.05mm to 0.15mm according to the size and shape of the diaphragm. The reinforcing ribs with the width within the numerical range are easy to manufacture and can effectively reduce the wrinkle textures on the surface of the diaphragm. The reinforcing rib with the width dimension smaller than 0.05mm cannot obviously improve the wrinkle texture on the surface of the vibrating diaphragm, and the reinforcing rib with the width dimension larger than 0.15mm consumes more raw materials and increases the manufacturing difficulty.
In one embodiment, the first reinforcing rib 11 and the second reinforcing rib 31 have a protrusion height or a depression depth of 0.01mm to 0.2 mm. Preferably, the height of the first reinforcing rib 11 and the depth of the second reinforcing rib 31 is larger than the average depth of the self-corrugation of the diaphragm containing the amorphous polyetheretherketone. The structure can more remarkably reduce the influence caused by self-wrinkling of the amorphous polyether-ether-ketone. The reinforcing ribs with the convex height or the concave depth within the numerical range are easy to manufacture and can effectively reduce the wrinkle textures on the surface of the diaphragm. The reinforcing ribs with the protrusion height or the depression depth smaller than 0.01mm cannot obviously improve the wrinkle textures on the surface of the diaphragm, and the reinforcing ribs with the protrusion height or the depression depth larger than 0.2mm consume more raw materials and increase the manufacturing difficulty. The height of the first reinforcing rib 11 may be different from the height of the second reinforcing rib 31, and the height/depth may be adjusted according to the specific adhesive force requirement.
In one embodiment, the first reinforcing ribs 11 are uniformly distributed on the central portion 1, and the distance between two adjacent first reinforcing ribs 11 is 0.5mm to 1.5 mm. The first reinforcing ribs 11 having the pitch within this range are easy to fabricate and can effectively reduce the wrinkle texture of the diaphragm surface. The first reinforcing ribs 11 with the spacing larger than 1.5mm cannot obviously improve the wrinkle texture on the surface of the diaphragm, and the first reinforcing ribs 11 with the spacing smaller than 0.5mm are difficult to manufacture and increase the cost.
In one embodiment, the second reinforcing ribs 31 are uniformly distributed on the fixing portion 3, and a distance between two adjacent second reinforcing ribs 31 is 0.3mm to 1.5 mm. The second reinforcing ribs 31 having the pitch within this range are easy to fabricate and can effectively reduce the wrinkle texture of the diaphragm surface. The second reinforcing ribs 31 with the spacing larger than 1.5mm cannot obviously improve the wrinkle textures on the surface of the diaphragm, and the second reinforcing ribs 31 with the spacing smaller than 0.3mm are difficult to manufacture and increase the cost.
In one embodiment, the distance between the first reinforcing rib 11 and the folded ring part 2, which is parallel to and adjacent to the folded ring part 2, is 0.05mm-0.1 mm. This spacing, d1, d1 shown in fig. 1 and 2, is easy to fabricate and is effective in reducing the wrinkled texture of the diaphragm surface. When d1 is larger than 0.1mm, the improvement effect on the wrinkle texture of the surface of the diaphragm is poor, and when d1 is smaller than 0.05mm, the manufacturing difficulty is high, and the cost is increased.
In one embodiment, the end of each first reinforcing rib 11 is spaced from the edge portion 2 by the same distance, which is 0.05mm to 0.1 mm. This spacing, d2, d2 shown in fig. 1 and 2, is easy to fabricate and is effective in reducing the wrinkled texture of the diaphragm surface. When d2 is larger than 0.1mm, the improvement effect on the wrinkle texture of the surface of the diaphragm is poor, and when d2 is smaller than 0.05mm, the manufacturing difficulty is high, and the cost is increased.
In one embodiment, an end portion of a portion of the second reinforcing rib 31 is disposed opposite to the folded ring portion 2, and a distance between the end portion and the folded ring portion 2 is 0.05mm to 0.15 mm. This spacing, d3, d3 shown in fig. 1 and 2, is easy to fabricate and is effective in reducing the wrinkled texture of the diaphragm surface. When d3 is larger than 0.15mm, the improvement effect on the wrinkle texture of the surface of the diaphragm is poor, and when d3 is smaller than 0.05mm, the manufacturing difficulty is high, and the cost is increased.
In one embodiment, the nearest distance between the other part of the second reinforcing ribs 31 and the parallel direction of the loop part 2 is 0.05mm-0.15 mm. This spacing, d4, d4 shown in fig. 1 and 2, is easy to fabricate and is effective in reducing the wrinkled texture of the diaphragm surface. When d4 is larger than 0.15mm, the improvement effect on the wrinkle texture of the surface of the diaphragm is poor, and when d4 is smaller than 0.05mm, the manufacturing difficulty is high, and the cost is increased.
According to another embodiment of the present invention, there is provided a sound-generating device including the diaphragm as described above. The sound generating means may be a loudspeaker, for example.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (12)
1. A diaphragm comprising at least one layer of amorphous polyetheretherketone material, comprising:
the central part is positioned in the central position of the diaphragm;
a folded ring portion disposed around a periphery of the central portion;
the fixing part surrounds the periphery of the folded ring part, and is configured to be fixedly connected with a supporting part outside the vibrating diaphragm;
the crystallized diaphragm is provided with folds; the central part is provided with a plurality of first reinforcing ribs, the fixing part is provided with a plurality of second reinforcing ribs, the extending directions of the first reinforcing ribs and the second reinforcing ribs are the same, and the extending directions of the first reinforcing ribs and the second reinforcing ribs correspond to the integral extending direction of the wrinkles;
the plurality of first reinforcing ribs are parallel to each other, and the plurality of second reinforcing ribs are parallel to each other;
the first reinforcing rib and the second reinforcing rib are both of convex structures or both of concave structures; or one of the first reinforcing rib and the second reinforcing rib is of a convex structure and the other one is of a concave structure; the protruding height or the sunken depth of the first reinforcing ribs and the second reinforcing ribs is larger than the average depth of the folds of the diaphragm.
2. The diaphragm of claim 1, wherein the width of the first reinforcing rib and the width of the second reinforcing rib are 0.05mm to 0.15 mm.
3. The diaphragm of claim 1, wherein the first reinforcing rib and the second reinforcing rib have a protrusion height or a depression depth of 0.01mm to 0.2 mm.
4. The diaphragm of claim 1, wherein the first reinforcing ribs are uniformly distributed on the central portion, and a distance between two adjacent first reinforcing ribs is 0.5mm to 1.5 mm.
5. The diaphragm of claim 1, wherein the second reinforcing ribs are uniformly distributed on the fixing portion, and a distance between two adjacent second reinforcing ribs is 0.3mm to 1.5 mm.
6. The diaphragm of claim 1, wherein a distance between the first reinforcing rib and the corrugated portion, which are parallel to and adjacent to the corrugated portion, is 0.05mm to 0.1 mm.
7. The diaphragm of claim 1, wherein the distance between the end of each first reinforcing rib and the loop part is equal and is 0.05mm-0.1 mm.
8. The diaphragm of claim 1, wherein an end portion of a portion of the second reinforcing rib is disposed opposite to the edge portion, and a distance between the end portion and the edge portion is 0.05mm to 0.15 mm.
9. The diaphragm of claim 8, wherein the nearest distance between the other part of the second reinforcing ribs and the bending ring part in the parallel direction is 0.05mm-0.15 mm.
10. The diaphragm of any one of claims 1 to 9, wherein the diaphragm has a rectangular structure, and the extending directions of the first reinforcing rib and the second reinforcing rib are parallel to the long axis of the diaphragm; alternatively, the first and second electrodes may be,
the extending direction of the first reinforcing rib and the second reinforcing rib is parallel to the short axis of the diaphragm.
11. The diaphragm of claim 10 wherein a composite layer is bonded to the central portion.
12. A sound-generating device, characterized in that it comprises a diaphragm according to any one of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911095956.3A CN110972034B (en) | 2019-11-11 | 2019-11-11 | Vibrating diaphragm and sound generating device |
| PCT/CN2019/129536 WO2021093117A1 (en) | 2019-11-11 | 2019-12-28 | Diaphragm and sound production device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911095956.3A CN110972034B (en) | 2019-11-11 | 2019-11-11 | Vibrating diaphragm and sound generating device |
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| CN110972034A CN110972034A (en) | 2020-04-07 |
| CN110972034B true CN110972034B (en) | 2021-05-18 |
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| CN201911095956.3A Active CN110972034B (en) | 2019-11-11 | 2019-11-11 | Vibrating diaphragm and sound generating device |
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| WO (1) | WO2021093117A1 (en) |
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| CN212588499U (en) * | 2020-06-18 | 2021-02-23 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN115379361A (en) * | 2022-09-28 | 2022-11-22 | 韩基岩 | Vibrating diaphragm array |
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| WO2017173600A1 (en) * | 2016-04-06 | 2017-10-12 | 易力声科技(深圳)有限公司 | Moving-coil speaker |
| CN207939723U (en) * | 2018-03-14 | 2018-10-02 | 安徽格林开思茂光电科技股份有限公司 | A kind of vibration sound film structure |
| CN208112926U (en) * | 2018-05-23 | 2018-11-16 | 信利光电股份有限公司 | A kind of diaphragm of loudspeaker and the loudspeaker with the vibrating diaphragm |
| CN109266275A (en) * | 2018-09-12 | 2019-01-25 | 苏州赛伍应用技术股份有限公司 | Microspeaker vibrating diaphragm ball high temperature resistant type bonds glue film and top dome module |
| CN209390304U (en) * | 2018-12-30 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Sound film and acoustical generator with it |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021093117A1 (en) | 2021-05-20 |
| CN110972034A (en) | 2020-04-07 |
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