CN211702289U - Sound generating device module and electronic product - Google Patents
Sound generating device module and electronic product Download PDFInfo
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- CN211702289U CN211702289U CN201922459075.7U CN201922459075U CN211702289U CN 211702289 U CN211702289 U CN 211702289U CN 201922459075 U CN201922459075 U CN 201922459075U CN 211702289 U CN211702289 U CN 211702289U
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a sound generating mechanism module and electronic product. This sound generating mechanism module includes: a module housing having an inner cavity; the elastic sound-transmitting mesh cloth is arranged in the inner cavity and divides the inner cavity into an accommodating area and a filling area, and the volume of the filling area is a first volume under the condition that the elastic sound-transmitting mesh cloth does not generate elastic deformation; a sound generator assembly disposed in the containment region, the sound generator assembly configured to generate sound; the sound absorption material is filled in the filling area, and the filling amount of the sound absorption material is greater than or equal to 90% of the first volume; the elastic sound-transmitting mesh cloth is made of a heat-shrinkable material and is configured to be shrinkable to recover from deformation through heat treatment or under the action of a preset environment.
Description
Technical Field
The utility model belongs to the technical field of the electroacoustic conversion, specifically, the utility model relates to a sound generating mechanism module and electronic product.
Background
In recent years, consumer electronics have been developed rapidly, and electronic devices such as mobile phones and tablet computers are widely used by consumers. Among them, speakers are important acoustic components in electronic products for converting electrical signals into sound for consumers to listen to. With the rapid development of the related technologies of electronic products, consumers have made higher performance demands on the acoustic performance of electronic products. In such circumstances, there is a need for corresponding improvements in acoustic devices by those skilled in the art.
Often be provided with sound absorbing material among the current speaker module for enlarge the virtual back sound chamber of speaker module, and then improve the effect of making a sound of speaker module. The sound-absorbing materials that can be used in the prior art are various, some of them are granular, and they are set in the speaker module by filling and the like. Due to the influence of factors such as the filling process and the structure of the speaker module, the filling amount of the granular sound-absorbing material is often smaller than the volume of the cavity for accommodating the sound-absorbing material in the speaker module. This causes the sound-absorbing material to move and shake in the speaker module.
When the loudspeaker module actually works, the air inside and around the loudspeaker module can be influenced by the vibrating diaphragm to generate vibration and transmit sound. The sound-absorbing materials can vibrate and rub against each other in the loudspeaker module after being vibrated by air. This phenomenon may generate vibration noise, which affects the sound output effect of the speaker module. On the other hand, the vibration may cause the sound-absorbing material to be pulverized and broken, and further cause the sound-absorbing material to block and collapse the pore channels; rendering the sound absorbing material ineffective.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide an improved sound generator module.
According to the utility model discloses a first aspect provides a sound generating mechanism module, include:
a module housing having an inner cavity;
the elastic sound-transmitting mesh cloth is arranged in the inner cavity and divides the inner cavity into an accommodating area and a filling area, and the volume of the filling area is a first volume under the condition that the elastic sound-transmitting mesh cloth does not generate elastic deformation;
a sound generator assembly disposed in the containment region, the sound generator assembly configured to generate sound;
the sound absorption material is filled in the filling area, and the filling amount of the sound absorption material is greater than or equal to 90% of the first volume;
the elastic sound-transmitting mesh cloth is made of a heat-shrinkable material and is configured to be shrinkable to recover from deformation through heat treatment or under the action of a preset environment.
Optionally, the elastic sound-transmitting mesh cloth is made of at least one of PVC, PET, ABS, EVA, and the like.
Optionally, a filling hole is formed in the module housing, the filling hole is communicated with the filling area, and the filling hole is opposite to the elastic sound-transmitting mesh cloth.
Optionally, the elastic sound-transmitting mesh cloth has a shrinkage deformation rate of 25% to 50% relative to an area of the elastic sound-transmitting mesh cloth after elastic deformation when the elastic sound-transmitting mesh cloth is shrunk and restored to deform.
Optionally, the elastic acoustically transparent mesh is configured to return to a flat state via a shrinkage-recovery deformation.
Optionally, the sound absorbing material is filled in an amount greater than or equal to the first volume.
Optionally, the temperature of the heat treatment is greater than or equal to 70 ℃.
Optionally, the temperature range of the heat treatment is 100 ℃ to 120 ℃.
The utility model has the technical effect that the problem of the wiping and the collision of the sound absorption materials is reduced.
According to another aspect of the present invention, there is provided an electronic product, including: the product main part to and foretell sound generating mechanism module, the sound generating mechanism module sets up in the product main part.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic side sectional view of the sound generating device module according to 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: unless specifically stated otherwise, 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.
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.
The utility model provides a sound generating mechanism module, this sound generating mechanism module include module casing, sound generating mechanism subassembly, elasticity sound-transparent screen cloth and sound absorbing material. The sound generating device assembly is arranged in the module shell, the sound generating device assembly can vibrate to generate sound after being communicated with a sound signal, and the sound generated by the sound generating device assembly can be transmitted out of the module shell. The sound generating device module can be generally used as a loudspeaker or a receiver in electronic products such as mobile phones, tablet computers and the like.
As shown in fig. 1, the elastic sound-permeable mesh 3 is arranged in the inner cavity of the module housing 1, thereby dividing the inner cavity into a receiving area 11 and a filling area 12. The accommodating area 11 is used for accommodating the sound generating device assembly 2, and the filling area 12 is used for accommodating the sound absorbing material 4. The elastic sound-transmitting mesh cloth 3 is made of materials such as a metal wire mesh and non-woven fabrics which can enable sound to pass through. It may serve to intercept the sound-absorbing material 4 and prevent the sound-absorbing material 4 from moving from the filling area 12 to the receiving area 11. Meanwhile, the elastic sound-transmitting mesh cloth 3 can make the sound generated by the sound-generating device assembly 2 pass from the accommodating area 11 to the filling area 12 through the elastic sound-transmitting mesh cloth 3.
The elastic sound-transmitting mesh 3 has a certain elastic deformation capacity. The elastic sound-transmitting mesh cloth 3 and the module shell 1 enclose to form the filling area 12 with a first volume in a state of not generating elastic deformation.
The sound-absorbing material 4 is filled in the filling region 12, as shown in fig. 1. The filling amount of the sound-absorbing material 4 is 90% or more of the first volume. That is, the total volume of the sound-absorbing material 4 filled in the filling region 12 is greater than or equal to 90% of the first volume. In this assembled condition, the means for filling the sound-absorbing material 4 or other external means can apply a filling force to the sound-absorbing material 4, thereby elastically deforming the elastic sound-transmitting mesh 3 and increasing the volume of the filling zone 12. By this embodiment, the elastic sound-transmitting mesh 3 is elastically deformed, and the volume of the filling area 12 is increased, so that a larger amount of sound-absorbing material 4, even a sound-absorbing material 4 having a volume larger than the first volume, can be accommodated therein. The technical scheme of the utility model in, elastic deformation that the elastic sound-transmitting screen cloth produced can make the elastic deformation that can resume naturally in the tradition meaning, also can be the extension deformation that can't resume naturally, the utility model discloses do not prescribe a limit to the deformation form that the elastic sound-transmitting screen cloth produced when receiving the filling effort.
The elastic acoustically transparent mesh is configured to be capable of shrinkage recovery deformation by heat treatment. In the embodiment of the present invention, the elastic sound-transmitting mesh cloth can be made of a material having shape memory property, or a material having a thermal contraction characteristic. In this way, after the elastic sound-transmitting mesh is elastically deformed, the elastic sound-transmitting mesh can be restored to a state close to the state before the elastic sound-transmitting mesh is not deformed or completely restored to the state without the elastic deformation by applying heat treatment to the elastic sound-transmitting mesh.
In the present embodiment, the elastic sound-transmitting mesh fabric is heat-treated to return to a state substantially close to an undeformed state, but in actual use, the return of the deformation of the elastic sound-transmitting mesh fabric is not limited to the heat treatment, and may be in other specific predetermined environments as long as it can return to a state close to an undeformed state under the action of the predetermined environment.
Through adopting the technical scheme of the utility model, can improve sound absorbing material is in filling volume in the filling district. The utility model discloses in, will elasticity sound transmission screen cloth's shape resumes the back, and elasticity sound transmission screen cloth can produce the thrust effort to the sound absorbing material, pushes sound absorbing material to the region that is difficult for being occupied by sound absorbing material in the filling area, for example irregular shape region, narrow region in the corner position of filling area or the filling area. Furthermore, due to the fact that the filling amount of the sound-absorbing material is large, after the elastic sound-transmitting mesh cloth recovers the shape, the sound-absorbing material can fill the area of the filling opening which is difficult to fill in the prior art.
The technical scheme of the utility model in, what sound absorbing material can be better is full of the filling area. When the sound generating device module actually works, the sound absorbing material is not easy to vibrate and rub due to factors such as sound vibration, and the possibility of generating noise and influencing the acoustic performance is reduced. The improved effect is caused by that the filling amount of the sound-absorbing material is higher, the filling area can be filled up basically or completely, the sound-absorbing material in the filling area is close to each other under the restriction of the space, and even a certain compression effect can be generated. Thus, the sound-absorbing material is not easy to vibrate and rub when receiving sound and air vibration.
In the prior art, due to the limitation of the canning process of the sound-absorbing material and the existence of relatively complicated and narrow areas in the shape and space inside the module shell of the sound-generating device module, the sound-absorbing material is difficult to move to the part of the area in the normal filling process. Further, the sound absorbing material cannot fill the filling area, and the hidden trouble of rubbing and shaking is generated. After the sound generating device module is assembled, the sound absorbing material inside the sound generating device module is in a loose state, and the sound absorbing material collides and rubs with each other in the sound generating device module due to vibration or shaking, so that noise is generated. The technical scheme of the utility model effectual this problem of solution, reduce or avoid the sound absorbing material to collide each other, wipe the problem of bumping.
The sound-absorbing material can be porous sound-absorbing material particles, sound-absorbing material powder and the like, and the sound-absorbing material is mostly arranged in the module shell in a bulk mode.
Alternatively, the elastic sound-transmitting mesh cloth may be made of at least one of PVC (polyvinyl chloride), PET (polyethylene terephthalate), ABS (terpolymer resin), EVA (ethylene vinyl acetate). The material generally has a linear microstructure, and after the material is made into a net structure of elastic sound-transmitting mesh cloth, the material can have a certain shape memory effect. For example, after elastic deformation, the shape can be recovered from the new shrinkage by heat treatment. The utility model discloses the above-mentioned polymer heat shrinkable material that adopts utilizes the interior contraction stress of material to make the chain segment take place the principle of shrink when heating. This shrinkage deformation is a unidirectional deformation. Once the material is elastically deformed and heated to shrink, the typical thermal expansion and contraction change along with the temperature can not occur. Thus, the utility model provides a sound generating mechanism module can play stable, reliable limiting action to sound absorbing material, prevents that it from vibrating, wiping and bumping the scheduling problem.
In addition, the high polymer material adopted as the heat shrinkable material has the characteristics of low shrinkage temperature and high shrinkage speed, and can realize the shrinkage recovery deformation process more efficiently. The high polymer material also has good flame retardance and insulation performance, and the reliability of the sound generating device module can be improved.
Alternatively, the elastic sound-transmitting mesh cloth can also be made of other materials with thermal contraction deformation characteristics. For example, a wire mesh may be used as a material for the acoustically transparent mesh cloth, which has good properties of intercepting sound absorbing materials and allowing sound to pass through. The wire mesh can be made of memory metal with thermosensitive deformation performance, so that the technical requirement of thermal contraction deformation is met.
Optionally, the module housing may have a filling hole formed therein. The filling hole is communicated with the filling area, and the filling hole is used for communicating the filling area with the outside. When the sound absorption material is filled and filled, the sound absorption material can be filled into the filling area through the filling hole. Through set up the filling hole on the module casing, can make the step of filling sound absorbing material not right hold the district and cause the influence, improve the assembly reliability. Alternatively, the filling holes may be located opposite the position of the elastic acoustically transparent mesh. In this way, the sound-absorbing material filled into the filling area can be moved directly to the position of the elastic sound-transmitting mesh. The design mode can easily cause the elastic sound-transmitting mesh cloth to generate elastic deformation, thereby improving the filling saturation of the sound-absorbing material in the filling area and reducing the possibility of the problem that the sound-absorbing material is loose and easy to rub and touch.
Optionally, the elastic sound-transmitting mesh cloth is configured to be capable of generating 25% -50% shrinkage deformation relative to the area after elastic deformation when subjected to heat treatment and generating shrinkage recovery deformation. That is, the shrinkage rate of the elastic sound-transmitting mesh cloth relative to the area after elastic deformation is 25% -50%. Like this, elasticity sound-transmitting screen cloth can produce great shrinkage deformation under natural state to reach and push away sound-absorbing material to each region in filling area, produce the technological effect of extrusion effort to sound-absorbing material.
Optionally, the elastic acoustically transparent mesh is configured to recover to a flat state prior to the elastic deformation upon contraction-recovery deformation. The advantage of this embodiment is that on the one hand the sound-absorbing material can effectively fill up the filling zone; on the other hand, the elastic sound-transmitting mesh cloth can not bend towards the containing area and occupy the space of the containing area, and the sound generating device assembly on one side of the containing area is guaranteed not to be affected.
And the filling amount of the sound absorption material filled in the filling area. The technical scheme of the utility model in, because elasticity sound-transparent screen cloth can produce elastic deformation, so for prior art, can pack more sound absorbing material to the filling district.
For example, 80% of the space in the filling region is a region to which the sound absorbing material is easily moved when the sound absorbing material is filled, and 20% of the space is a region to which the sound absorbing material is difficult to move. In the prior art, the sound-absorbing material is filled up to 85% of the volume of the filling region by conventional filling methods. And in the technical scheme of the utility model, the filling volume of sound absorbing material can reach the volume more than 90% of exceeding first volume. After the elastic sound-transmitting mesh cloth is heated to generate shrinkage and recovery deformation, the acting force of the elastic sound-transmitting mesh cloth can push the sound-absorbing material to areas which are difficult to reach in the filling area more. Optionally, the sound absorbing material may be filled in an amount equal to 95% of said first volume.
Optionally, the sound absorbing material is filled in the filling region in an amount greater than or equal to the first volume. For example, the sound absorbing material is filled in an amount corresponding to 100% or 101% or 103% of the first volume. Therefore, after the elastic sound-transmitting mesh cloth is shrunk and restored to deform, the sound-absorbing material can be filled in the filling area more effectively. Furthermore, the elastic sound-transmitting mesh cloth can also be used for producing extrusion acting force on the sound-absorbing material, so that the compactness of the sound-absorbing material is improved, and the vibration possibility is reduced.
The utility model also provides an assembly method of sound generating mechanism module, this assembly method can make above-mentioned sound generating mechanism module.
The assembly method comprises the following steps:
and assembling the elastic sound-transmitting mesh cloth in the inner cavity of the module shell, so that the inner cavity is divided into an accommodating area and a filling area by the elastic sound-transmitting mesh cloth. The sound generating device assembly is fixedly mounted in the accommodating area.
And filling the filling area with sound absorption materials, wherein the filling amount of the sound absorption materials is greater than or equal to 90% of the first volume of the filling area. The elastic sound-transmitting mesh cloth is elastically deformed by filling sound-absorbing materials, and the volume of a filling area is increased.
And applying heat treatment to the elastic sound-transmitting mesh cloth which generates elastic deformation to ensure that the elastic sound-transmitting mesh cloth generates contraction recovery deformation. The elastic sound-permeable mesh is restored to a state close to or before the elastic deformation. The elastic sound-transmitting mesh cloth pushes the sound-absorbing material to the area of the filling area which is not easy to move in the recovery process, and can apply extrusion acting force to the sound-absorbing material. After the elastic sound-transmitting mesh cloth finishes shrinkage and recovery deformation, the elastic sound-transmitting mesh cloth can limit the sound-absorbing material, and the problems of vibration and rubbing of the sound-absorbing material are avoided.
Optionally, the temperature of the heat treatment is greater than or equal to 70 ℃. In this temperature range, the heat-shrinkable material can be shrunk, recovered and deformed.
Optionally, the temperature range of the heat treatment is 100 ℃ to 120 ℃. The overhigh temperature for avoiding the heat treatment can protect the sound absorbing material and the components in the sound generating device module, and prevent the components from being damaged in the heat treatment. Simultaneously, this temperature range can guarantee that the quick realization shrink of heat-shrinkable material resumes to warp, realizes the utility model discloses carry out the purpose of restriction to sound absorbing material.
Optionally, the filling area may be closed prior to the heat treatment to prevent sound absorbing material that has been filled into the filling area from leaking out of the filling holes or other open portions of the filling area. After the heat treatment, the elastic sound-transmitting mesh cloth can extrude the sound-absorbing material, so that the compactness of the sound-absorbing material is improved.
The utility model discloses still disclose an electronic product, the sound generating mechanism module sets up in electronic product. The electronic product has better tone quality.
Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the 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 (7)
1. A sound generating device module, comprising:
a module housing having an inner cavity;
the elastic sound-transmitting mesh cloth is arranged in the inner cavity and divides the inner cavity into an accommodating area and a filling area, and the volume of the filling area is a first volume under the condition that the elastic sound-transmitting mesh cloth does not generate elastic deformation;
a sound generator assembly disposed in the containment region, the sound generator assembly configured to generate sound;
the sound absorption material is filled in the filling area, and the filling amount of the sound absorption material is greater than or equal to 90% of the first volume;
the elastic sound-transmitting mesh cloth is made of a heat-shrinkable material and is configured to be shrinkable to recover from deformation through heat treatment or under the action of a preset environment.
2. The sound generator module of claim 1, wherein the elastic sound-permeable mesh is made of at least one of PVC, PET, ABS, and EVA.
3. The sound generator module of claim 1, wherein a filling hole is formed in the module housing, the filling hole being in communication with the filling area, the filling hole being located opposite to the elastic sound-permeable mesh.
4. The acoustical device module of claim 1 wherein the elastic acoustically transparent mesh has a shrinkage deformation rate of 25% to 50% relative to an area of the elastic acoustically transparent mesh after elastic deformation when the elastic acoustically transparent mesh contracts to recover from deformation.
5. The sound generator module of claim 1, wherein the elastic acoustically transparent mesh is configured to return to a flat state via a shrinkage-recovery deformation.
6. The sound generator module of claim 1 wherein the sound absorbing material is filled in an amount greater than or equal to the first volume.
7. An electronic product, comprising:
a product body;
the sound generator module of any one of claims 1-6, disposed in the product body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922459075.7U CN211702289U (en) | 2019-12-30 | 2019-12-30 | Sound generating device module and electronic product |
| PCT/CN2020/126644 WO2021135631A1 (en) | 2019-12-30 | 2020-11-05 | Sound-generating device module and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922459075.7U CN211702289U (en) | 2019-12-30 | 2019-12-30 | Sound generating device module and electronic product |
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| CN211702289U true CN211702289U (en) | 2020-10-16 |
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| CN201922459075.7U Active CN211702289U (en) | 2019-12-30 | 2019-12-30 | Sound generating device module and electronic product |
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| CN (1) | CN211702289U (en) |
| WO (1) | WO2021135631A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147977A (en) * | 2019-12-30 | 2020-05-12 | 歌尔科技有限公司 | Sound production device module and assembly method |
| WO2021135631A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Sound-generating device module and electronic product |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104202703B (en) * | 2014-09-01 | 2017-11-24 | 歌尔股份有限公司 | Loudspeaker module |
| CN204681564U (en) * | 2015-05-12 | 2015-09-30 | 瑞声光电科技(常州)有限公司 | Microphone device |
| CN105898659A (en) * | 2016-06-16 | 2016-08-24 | 歌尔股份有限公司 | Loudspeaker module |
| CN208821049U (en) * | 2018-10-11 | 2019-05-03 | 歌尔科技有限公司 | A kind of sounding device mould group and audible device |
| CN109874094A (en) * | 2018-12-18 | 2019-06-11 | 歌尔股份有限公司 | Acoustic apparatus and electronic equipment |
| CN109769182B (en) * | 2019-01-31 | 2021-03-30 | 歌尔股份有限公司 | Preparation method of sound-absorbing material, sound-absorbing material and loudspeaker module |
| CN111147977A (en) * | 2019-12-30 | 2020-05-12 | 歌尔科技有限公司 | Sound production device module and assembly method |
| CN211702289U (en) * | 2019-12-30 | 2020-10-16 | 歌尔科技有限公司 | Sound generating device module and electronic product |
-
2019
- 2019-12-30 CN CN201922459075.7U patent/CN211702289U/en active Active
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2020
- 2020-11-05 WO PCT/CN2020/126644 patent/WO2021135631A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147977A (en) * | 2019-12-30 | 2020-05-12 | 歌尔科技有限公司 | Sound production device module and assembly method |
| WO2021135631A1 (en) * | 2019-12-30 | 2021-07-08 | 歌尔股份有限公司 | Sound-generating device module and electronic product |
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| WO2021135631A1 (en) | 2021-07-08 |
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