CN211670953U

CN211670953U - Sound generating device module and electronic product

Info

Publication number: CN211670953U
Application number: CN201922427730.0U
Authority: CN
Inventors: 李洪杰; 刘影男; 鲁路路
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-13
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a sound generating mechanism module and electronic product. This sound generating mechanism module includes: the module shell is provided with a sound leakage hole, and the sound leakage hole is communicated with the inside of the module shell; the screen cloth component comprises a cover plate, screen cloth and a glue layer; the cover plate is provided with an adhesive surface, an air guide channel is formed on the cover plate, an inner through hole of the air guide channel is positioned on the adhesive surface, an outer through hole of the air guide channel is configured to be communicated with the outside, and the mesh cloth is arranged at the inner through hole; the screen cloth subassembly passes through the glue film bonds to be fixed on the module casing, interior opening with let out the sound hole intercommunication.

Description

Sound generating device module and electronic product

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.

Loudspeakers used in consumer electronics products are small in size. And the acoustic performance of the speaker, such as the resonant frequency, bass performance, etc., is affected by the volume of the speaker. In practical applications, the relatively large speaker back cavity can improve the acoustic performance of the speaker better. In addition, the space inside the speaker needs to be provided for sound and air flow to pass through, and the speaker needs to be arranged in structures such as a pressure relief hole communicated with the outside. If the whole size of the loudspeaker is small, the air flowing space is complex, and the air flowing requirement of the acoustic performance is not met, so that the performances such as the resonant frequency of the loudspeaker, the sensitivity of a loudspeaker diaphragm and the like are adversely affected.

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:

the module shell is provided with a sound leakage hole, and the sound leakage hole is communicated with the inside of the module shell;

the screen cloth component comprises a cover plate, screen cloth and a glue layer;

the cover plate is provided with an adhesive surface, an air guide channel is formed on the cover plate, an inner through hole of the air guide channel is positioned on the adhesive surface, an outer through hole of the air guide channel is configured to be communicated with the outside, and the mesh cloth is arranged at the inner through hole;

the screen cloth subassembly passes through the glue film bonds to be fixed on the module casing, interior opening with let out the sound hole intercommunication.

Optionally, a strip-shaped groove is formed in the pasting surface, the strip-shaped groove extends to the edge of the cover plate, the adhesive layer covers the pasting surface, the adhesive layer and the strip-shaped groove are combined to form the air guide channel, and one end of the strip-shaped groove, which extends to the edge of the cover plate, serves as the outer through opening.

Optionally, a pattern recess is formed at one end of the strip-shaped groove located in the pasting surface, the size of the pattern recess is larger than the width of the strip-shaped groove, and the pattern recess is used as the inner through opening.

Optionally, the pattern recess is rectangular, circular or triangular.

Optionally, the size of the pattern recess is larger than the size of the sound leakage hole.

Optionally, the glue film includes first glue film, first glue film covers paste on the face, first glue film is in corresponding the position department of interior opening is formed with first through-hole, the screen cloth is pasted keeping away from of first glue film one side of pasting the face.

Optionally, the glue film includes the second glue film, the second glue film is pasted keeping away from of first glue film one side of pasting the face, the second through-hole has been seted up on the second glue film, the size of second through-hole and screen cloth is greater than the size of first through-hole, the screen cloth is located second through-hole department.

Optionally, the mesh cloth has a size larger than that of the first through hole.

Optionally, the mesh cloth has a size larger than the size of the sound release holes.

The utility model also provides an electronic product, include:

the product comprises a product main body, a sound outlet and a sound guide plate, wherein the product main body is provided with a sound outlet;

above-mentioned sound generating mechanism module, the sound generating mechanism module sets up in the product main part, the sound generating mechanism module is configured to can work the sound production, the sound hole supplies sound to spread.

The utility model discloses a technological effect lies in improving the sound structure of letting out of sound generating mechanism module, and then improving the acoustic performance of sound generating mechanism module.

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 an exploded schematic view of a mesh assembly of a sound generating device module according to the present invention;

FIG. 2 is a schematic view of the overall structure of the screen assembly provided by the present invention;

FIG. 3 is a schematic view of an adhesive surface of the mesh assembly according to the present invention;

fig. 4 is a schematic side sectional view of the mesh assembly provided by 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 device module, this sound generating device module include module casing and screen cloth subassembly. The module shell is used for accommodating parts in the sound generating device module. For example, a sound generator assembly including a diaphragm and a magnetic circuit system may be disposed in the module housing, and the sound generator assembly may vibrate to generate sound after being fed with a sound signal, and the generated sound may be transmitted out of the module housing. 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.

The module shell can be formed with a sound vent, which communicates with the internal structure of the module shell. When the sound generating device module actually works, the vibrating diaphragm can vibrate to generate sound. Due to the vibration of the diaphragm, the air on both sides of the diaphragm can generate air pressure change. Wherein, the air that the vibrating diaphragm communicates to sound outlet one side can be through sound outlet and external intercommunication to release the pressure that atmospheric pressure change produced. The air communicated to one side of the interior of the module shell is difficult to directly communicate with the outside, and the pressure generated by the change of the air pressure is difficult to release. The sound vent arranged on the module shell can lead out the air flow in the module shell, thereby releasing the pressure formed in the module shell. Further, the problems of reduction of vibration sensitivity, limitation of amplitude and the like of the vibrating diaphragm caused by different air pressures on two sides of the vibrating diaphragm are avoided.

As shown in fig. 1, the mesh assembly includes a cover plate 1, a mesh 3 and a glue layer. An air guide channel is formed in the mesh cloth component. The mesh assembly is attached to the module shell, one end of the air guide channel is communicated with the sound release hole, and the other end of the air guide channel is communicated with the outside. Through the air guide channel with let out the cooperation of sound hole, can improve let out the effect of the buffer pressure of sound hole, absorption sound vibration to improve the acoustics performance of sound generating mechanism module. Fig. 2 shows a state when the mesh assembly is assembled together, and the lower surface of the mesh assembly shown in fig. 2 may be directly fixed to the outer surface of the module case, so that the air guide passage is in butt communication with the sound discharge hole.

As shown in fig. 1 and 3, the cover plate 1 has an adhesive surface 11, and in this embodiment, the air guide channel is formed in the cover plate 1. The inner through opening 102 (one end) of the air guide channel is located on the adhesive surface 11. The outer port 101 (the other end) of the air guide channel is communicated with the outside. By this design, the air guide channel forms a complete passage in the cover plate 1, so that air can circulate to relieve the pressure generated by the vibration of the diaphragm. The mesh 3 is arranged at the inner through hole 102, the mesh 3 is used for providing a damping effect, on one hand, the mesh can absorb vibration, and on the other hand, the mesh can allow air to pass through, so that a pressure relief effect is achieved.

The screen cloth subassembly passes through the glue film is pasted and is fixed on the module casing, and make interior opening with let out the sound hole intercommunication. Thus, when the vibrating diaphragm vibrates, the air in the module shell can transmit vibration and air pressure to the sound leakage hole. The mesh cloth plays the effect of absorption, isolation buffering to the vibration, and the air can see through the mesh cloth and then form the convection current with air guide channel, external environment, releases air pressure. The technical scheme of the utility model effectively play balanced air current, improve the effect of sound compliance. The air guide channel further plays a role in guiding air, so that the acoustic resistance is increased, the resonance frequency of the sound generating device module is reduced, and the acoustic performance is effectively improved.

Optionally, the cover plate is formed by injection molding of a plastic material, so that the difficulty of forming the air guide channel in the cover plate can be reduced from a process point of view, and the air guide channel with a preset shape can be formed more easily according to the requirement of acoustic performance.

Optionally, as shown in fig. 3 and 4, a strip-shaped groove 111 is formed in the adhesive surface 11, and the strip-shaped groove 111 extends from the central area of the cover plate 1 to the edge of the cover plate 1. This covers the adhesive side 11. In this embodiment, the adhesive layer covers the strip-shaped groove 111, which together with the strip-shaped groove 111 forms the air guide channel. One end of the strip-shaped groove 111 extending to the edge of the cover plate 1 serves as the outer through opening 101. One end of the strip-shaped groove 111 located on the central area of the cover plate 1 serves as the inner through opening 102. This embodiment has the advantage that the shaping of the air guide channel is less difficult and it is easier to form a predetermined curved shape according to the acoustic properties required.

In other embodiments, the air guide channel may also open directly into the interior of the cover plate. For example, one end of the air guide channel is positioned on the adhesive surface, the air guide channel is bent and extended in the thickness direction of the cover plate, and then the outer through hole is formed from the upper surface of the cover plate opposite to the adhesive surface to be in communication with the outside.

Alternatively, as shown in fig. 3, the strip-shaped groove 111 forms a pattern recess at one end of the central area of the adhesive surface 11. The size of the pattern recess is larger than the width of the strip-shaped groove 111. The pattern of recesses serves as the inner through opening 102 of the gas guide channel. Through forming the great figure of size sunken, can make the interior through hole 102 of air guide channel more easily with let out the sound hole and form the butt joint relation, reduce because of the unable and accurate butt joint's of interior through hole that causes because of assembly error between screen cloth subassembly and the module casing problem of letting out the sound hole. On the other hand, the inner through hole is designed to have a wider size, so that the effects of guiding air and relieving pressure can be better achieved.

Alternatively, in the embodiment shown in fig. 3, the pattern of depressions is circular. In other embodiments, the pattern of depressions may be rectangular or triangular. The specific shape of the pattern recess may be changed according to the docking manner of the sound vent and the pattern recess, the shape of the inner through hole 102 and the air guide channel required by the acoustic performance, and other factors. Different shapes of the patterned recesses produce different acoustic properties.

Alternatively, in the embodiment where the pattern recess is circular, the diameter of the pattern recess may range from 0.6 mm to 0.8mm, and correspondingly, the diameter of the pressure relief hole may range from 0.3mm to 0.4 mm. The design mode can ensure the butt joint relation between the pressure relief hole and the inner through hole 102 and can better play a role in guiding air. Optionally, the size of the pattern recess is larger than the size of the sound leakage hole.

As shown in fig. 1 and 4, the glue layer may include a first glue layer 21. The first adhesive layer 21 covers the adhesive surface 11, and a first through hole 211 is formed in the first adhesive layer 21 at a position corresponding to the inner through hole 102. The mesh 3 can be attached to the side of the first adhesive layer 21 away from the adhesive surface 11. In this embodiment, the first layer of adhesive directly serves to secure the web 3 to the adhesive side 11. On the other hand, the cover plate attached with the first adhesive layer can be directly attached to the module shell. The first through hole 211 is for air to pass through.

Optionally, the glue layer may also include a second glue layer 22. The second adhesive layer 22 is adhered to the first adhesive layer 21 on the side far from the adhering surface 11. Because the screen cloth 3 is pasted on the first glue film 21, consequently when directly bonding on with first glue film 21 to the module casing, the thickness of screen cloth 3 can lead to the fact certain hindrance to bonding. In a preferred embodiment, as shown in fig. 4, by providing the second adhesive layer 22, the adhesion interference caused by the mesh 3 can be reduced or eliminated. The second adhesive layer 22 is provided with second through holes 221, and the size of the second through holes 221 can be matched with the size of the mesh cloth 3. The size of the second through holes 221 and the mesh cloth 3 is optionally larger than the size of the first through holes 211. Like this, the screen cloth can be latent second through-hole department, also the second through-hole has played the effect of acceping the screen cloth to reduce the screen cloth is to pasting the hindrance interference that forms on the module casing with the apron.

The sizes of the second through holes 221 and the mesh cloth 3 are designed to be larger than those of the first through holes 211, so that the difficulty in assembling and positioning the second adhesive layer, the mesh cloth 3 and the first through holes 211 is reduced.

Through first glue film and the combination of second glue film constitute the glue film can be effectual holds screen cloth 3 wherein, the apron passes through the second glue film bonds to be fixed on the module casing.

Optionally, the thickness of the mesh 3 may be less than or equal to the thickness of the second adhesive layer, so as to further eliminate the obstruction of the adhesive layer to the module housing caused by the mesh 3.

Optionally, in other embodiments, the mesh cloth may be sized to be larger than the first through holes. Optionally, the mesh cloth may be sized to be larger than the sound outlet holes. On one hand, the damping effect is improved, and a good vibration absorption effect is achieved. On the other hand, reduce the screen cloth and first through-hole, let out the location degree of difficulty between the sound hole, improve product functional reliability.

Alternatively, in an embodiment in which the air guide channel is formed by combining a strip-shaped groove with the adhesive layer, the adhesive layer may also be formed with a notch at the outer through opening 101, so that the strip-shaped groove is not completely covered at the outer through opening 101. The implementation mode can ensure that the outer through opening has the characteristic of an open structure, thereby improving the smooth degree of the communication between the air guide channel and the outside and improving the pressure relief capacity of the air guide channel.

The utility model also provides an electronic product, this electronic product include product subject and above-mentioned sound generating mechanism module. The product main body is provided with a sound outlet. The product main body can be a mobile phone, a tablet personal computer, an earphone and the like. The sound generating device module is arranged inside the product theme. The sound generating device module is configured to be capable of inputting sound signals to work and generate sound, and the sound outlet is used for the sound generated by the sound generating device module to be transmitted out.

The screen cloth subassembly is fixed on the module casing of sound generating mechanism module, and it is together fixed inside the product main part with the sound generating mechanism module. The outer port can communicate to the inside big cavity of product main part in, and then further communicates with external space through gap, the trompil on the product main part.

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

1. A sound generating device module, comprising:

2. The sound generating device module according to claim 1, wherein a strip-shaped groove is formed in the adhesive surface, the strip-shaped groove extends to the edge of the cover plate, the adhesive layer covers the adhesive surface, the adhesive layer and the strip-shaped groove are combined to form the air guide channel, and one end of the strip-shaped groove, which extends to the edge of the cover plate, serves as the outer through opening.

3. The sound generator module as claimed in claim 2, wherein the strip-shaped groove forms a pattern recess at an end thereof located in the adhesive surface, the pattern recess having a size larger than a width of the strip-shaped groove, and the pattern recess serves as the inner through opening.

4. The sound generator module of claim 3, wherein the pattern of depressions is rectangular, circular, or triangular.

5. The sound generator module of claim 3 wherein said pattern depressions are larger in size than said sound holes.

6. The sound generating device module according to claim 1, wherein the adhesive layer includes a first adhesive layer, the first adhesive layer covers the adhesive surface, a first through hole is formed in a position of the first adhesive layer corresponding to the inner through hole, and the mesh is attached to one side of the first adhesive layer, which is far away from the adhesive surface.

7. The sound generating device module according to claim 6, wherein the adhesive layer comprises a second adhesive layer, the second adhesive layer is adhered to one side of the first adhesive layer, which is far away from the adhering surface, a second through hole is formed in the second adhesive layer, the size of the second through hole and the size of the mesh cloth are larger than that of the first through hole, and the mesh cloth is located at the second through hole.

8. The sound generating device module defined in claim 6, wherein the mesh fabric is larger in size than the first through-holes.

9. The sound generator module as claimed in claim 1, wherein the mesh has a size larger than the size of the sound outlet holes.

10. An electronic product, comprising:

the sound generator module of any one of claims 1-9, being disposed within the product body, the sound generator module being configured to generate sound, the sound outlet being for sound to exit.