WO2012016386A1

WO2012016386A1 - Dustproof and waterproof net for electroacoustic device

Info

Publication number: WO2012016386A1
Application number: PCT/CN2010/075761
Authority: WO
Inventors: 龚义刚; 龚高潮
Original assignee: 海能达通信股份有限公司
Priority date: 2010-08-06
Filing date: 2010-08-06
Publication date: 2012-02-09

Abstract

A dustproof and waterproof net for an electroacoustic device includes a protective membrane assembly (1) which comprises a net cloth (17), a nonporous sheet (15) adhered to the net cloth (17), a membrane (13) adhered to the nonporous sheet (15) and a foam cotton (11) adhered to the membrane (13). The net cloth (17) is adhered to the electroacoustic device by a first binder (18). Under the premise of ensuring high standard dustproof and waterproof protective level, the dustproof and waterproof net can also output sound with good quality.

Description

Dustproof and waterproof net of electroacoustic device

Technical field

The present invention relates to electroacoustic devices, and more particularly to a dustproof and waterproof net for electroacoustic devices.

Background technique

With the special needs of communication equipment in harsh outdoor environments, the communication equipment receiver needs to be equipped with a dustproof and waterproof net (also called a protective film).

Referring to Fig. 1, the figure is a structural diagram of a dustproof and waterproof net of a conventional communication device receiver. The dustproof and waterproof net (also called protective film) 103 of the existing communication device receiver is attached to the sheet 101 through the adhesive 102, and then connected to the receiver (not shown) through the adhesive 104, so that the communication device is sounded by the receiver. The volume is low and the sound quality is poor.

In addition, under the protection level of strong flushing, the dustproof and waterproof net of the existing communication equipment receiver is easily broken by water pressure, so that the surface of the communication equipment (such as the receiver) is flooded, which brings sound and related reliability. Serious impact.

With the special requirements of communication equipment in harsh outdoor environments, how to ensure good sound quality while ensuring a high standard of dustproof and waterproof protection is a technical problem that needs to be solved by those skilled in the art.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a dustproof and waterproof net for an electroacoustic device, which is required to ensure a high standard of dustproof and waterproof protection, and at the same time requires good sound quality.

In order to solve the above problems, the technical solution provided by the present invention is as follows:

A dustproof and waterproof net of an electroacoustic device, the dustproof and waterproof net comprising a protective film assembly; the protective film assembly comprising a mesh, a non-porous sheet bonded to the mesh, and the non-porous a film bonded to the sheet, and a foam bonded to the film;

The mesh is bonded to the electroacoustic device by a first adhesive.

Preferably, the dustproof waterproof mesh further comprises a protective mesh assembly bonded to the pellicle assembly.

Preferably, the protective net assembly comprises an apertured sheet;

The apertured sheet is bonded to the foam of the pellicle membrane or the outer casing of the electroacoustic device by a second adhesive. Preferably, the double-sided adhesive phase with the substrate is passed between the mesh and the non-porous sheet, between the non-porous sheet and the film, between the film and the foam. Bonding.

Preferably, the foam is an elastic foam.

Preferably, the film is a microporous film.

Preferably, the film has a thickness of 0.01 to 0.035 mm.

Preferably, the mesh cloth is a mesh cloth.

Preferably, the first adhesive agent is a double-sided waterproof adhesive with a substrate.

In the dustproof and waterproof net of the electroacoustic device according to the embodiment of the invention, since the film is located above the mesh cloth, water can be effectively prevented from entering the interlayer of the film and the mesh, and the sound quality of the sound is ensured. In addition, since the foam is adhered to the outside of the film, the sound quality is improved while improving the waterproof reliability, and the technical protection of the shock absorption and sealing of the film can be provided.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a structural diagram of a dustproof and waterproof net of a conventional communication device receiver;

2 is a top view of a dustproof and waterproof net of the electroacoustic device according to the first embodiment of the present invention;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

4 is a bottom view of the dustproof and waterproof net of the electroacoustic device according to the first embodiment of the present invention;

5 is an exploded view of the dustproof and waterproof net of the electroacoustic device according to the first embodiment of the present invention; FIG. 6 is an exploded view of the dustproof and waterproof net of the electroacoustic device according to the second embodiment of the present invention; A top view of the protective net assembly of the embodiment of the invention;

Figure 8 is a cross-sectional view taken along line B-B of Figure 7;

Figure 9 is a bottom view of the protective net assembly according to the embodiment of the present invention;

Figure 10 is an exploded view of the fence assembly of the embodiment of the present invention.

detailed description

The invention provides a dustproof and waterproof net of an electroacoustic device, which is used for ensuring a high standard of dustproof and waterproof protection level, and at the same time requires good sound quality output. In order to more clearly explain the specific structure of the dustproof and waterproof net of the electroacoustic device of the present invention, it will be specifically described below with reference to the accompanying drawings.

2 is a top view of the dustproof and waterproof mesh of the electroacoustic device according to the first embodiment of the present invention; FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; FIG. 5 is an exploded view of the dustproof and waterproof net of the electroacoustic device according to the first embodiment of the present invention; FIG.

The dustproof and waterproof net of the electroacoustic device according to the first embodiment of the present invention includes the protective film assembly 1. The pellicle assembly 1 may specifically include a mesh cloth 17, a non-porous sheet 15 bonded to the mesh sheet 17, a film 13 bonded to the non-porous sheet 15, and the film 13 Adhesive foam 11 . The electro-acoustic device may specifically be a receiver device, a microphone, a buzzer or the like.

The foam 11 may specifically be an elastic foam for functioning as a seal.

The film 13 may be a microporous film such as an E-PTFE (polytetrafluoroethylene) film or the like. The E-PTFE film has a waterproof, breathable and sound permeable effect. The non-aperture sheet 15 not only serves to reinforce the film 13 but also strengthens the die-cutting effect, and also functions as an isolation space between the film 13 and the mesh sheet 17, and can ensure the film 13 when the receiver generates airflow. Vibration space. The mesh 17 serves to limit the film 13 to ensure that the film 13 does not exceed its maximum deformation amplitude when the water pressure is too large. At the same time, the mesh 17 needs to have good sound permeability, and the surface is smooth and free of wool, so as not to damage the film 13 . The mesh is a microporous mesh. The mesh opening number of the mesh 17 can be from 100 mesh to 500 mesh, preferably from about 200 mesh to about 300 mesh.

The film 13 has a thickness of 0.01 to 0.035 mm. The film 13 has an optimum thickness ranging from 0.02 to 0.03 mm, and the film 13 has water repellency and good gas permeability. The film 13 can attenuate the sound within 3 dB, and can increase the oil repellency when it is required. When the film 13 is processed, the film 13 is not stretched and is flattened on the adhesive with the substrate. After the film 13 is formed, the surface of the finished film is not damaged, and the surface is free from dust, oil, etc., and attention is paid to packaging and storage.

The mesh 17 is bonded to the electroacoustic device 3 by a first adhesive 18. The first adhesive 18 is used to ensure the waterproof effect of the entire member after the protective film assembly 1 is assembled to the receiver housing.

The first adhesive agent 18 may specifically be a double-sided waterproof adhesive with a substrate. The first adhesive 18 preferably has good waterproof properties. When the electroacoustic device is a surface material with a low surface energy, the first adhesive 18 is selected to have good adhesiveness to ensure reliable protection and use of the electroacoustic device 3. Life expectancy.

According to the embodiment of the present invention, the dustproof and waterproof mesh structure of the electroacoustic device is designed and installed, and the first adhesive agent 18, that is, the double-sided waterproof adhesive can be disposed on the surface of the foam 11 (through the first adhesive 18 and the electroacoustic device) The inner surface of the face shell is pasted, and a first adhesive agent 18, that is, a double-sided waterproof adhesive (which is adhered to the outer surface of the outer surface of the electroacoustic device by the first adhesive 18) may be placed on the surface of the mesh cloth 17. These two conditions have no effect on the performance and reliability of the dustproof and waterproof net.

The mesh cloth 17 and the non-porous sheet 15 may be specifically bonded by a third adhesive 16. The non-porous sheet 15 and the film 13 can be specifically bonded by the fourth adhesive 14. The film and the foam 11 may be specifically bonded by a fifth adhesive 12.

The third adhesive 16, the fourth adhesive 14, and the fifth adhesive 12 may be the same adhesive, and may specifically be a double-sided adhesive with a substrate. The double-sided adhesive with substrate is required to have good adhesiveness to the foam, mesh and plastic, and the thickness is thin. The double-sided adhesive with a substrate may specifically be an acrylic adhesive, which improves the sealing property of the micropores. In addition, the double-sided adhesive with a substrate needs to have good moisture resistance to prevent the film from falling off due to moisture penetration.

The dustproof and waterproof net of the electroacoustic device of the present invention can effectively prevent water from entering the interlayer of the film 13 and the mesh cloth 17 because the film 13 is located above the mesh cloth 17, thereby ensuring the sound quality of the sound of the electroacoustic device. In addition, since the foam 11 is adhered to the outside of the film 13, the sound quality is improved while improving the waterproof reliability, and the technical protection of the shock absorption and sealing of the film 13 can be provided.

The thickness dimension and component size of the pellicle component 1 are determined by the design of the product structure. In the production of the protective film unit 1, it is necessary to make a requirement for the sound-conducting hole position of the foam 11 and the corresponding opening concentric deviation of each of the adhesives (first, third, fourth, and fifth adhesives) and the non-porous sheet 15.

When the structural design and assembly requirements are met, the dustproof and waterproof mesh of the electroacoustic device according to the embodiment of the present invention may comprise two or more components to achieve flexible assembly.

In order to further ensure the effects of waterproofing and sound quality, the dustproof and waterproof net of the electroacoustic device according to the second embodiment of the present invention is different from the first embodiment in that the protective net assembly 2 is added.

Referring to Fig. 6, there is shown an exploded view of a dustproof and waterproof net of an electroacoustic device according to a second embodiment of the present invention.

The dustproof and waterproof net of the electroacoustic device according to the second embodiment of the present invention further includes a protective net assembly 2 bonded to the pellicle assembly 1. In order to specifically understand the structure of the protective net assembly 2 by those skilled in the art, the following will be specifically described with reference to FIGS. 7 to 10.

7 is a top view of the protective net assembly according to the embodiment of the present invention; FIG. 8 is a cross-sectional view taken along line BB of FIG. 7; FIG. 9 is a bottom view of the protective net assembly according to the embodiment of the present invention; An exploded view of the protective mesh assembly of the embodiment of the present invention.

In the embodiment of the present invention, the protective mesh assembly 2 and the protective film assembly 1 are two separate components, which may be assembled together, or the protective mesh assembly 2 may be externally mounted on the casing. Different assembly methods can be selected depending on the specific structure and product, so the application is more flexible.

The protective net assembly 2 can ensure the sound quality of the electroacoustic device under strong flushing conditions. The dustproof and waterproof net of the electroacoustic device according to the second embodiment of the present invention is unclean in the environment, and the sand is mixed with sediment, which does not seriously affect the water and sound quality, and can meet higher reliability requirements.

The protective mesh assembly 2 specifically includes an apertured sheet 21 to which the apertured sheet 21 is bonded by a second adhesive 22 to the foam 11 of the protective film assembly 1 or the outer casing of the electroacoustic device 3.

The surface of the barrier web member 2 with the aperture sheet 21 needs to be smooth and burr-free. The main function of the apertured sheet 21 is to reduce the flushing water pressure and protect the film 13 from too much water pressure to prevent the film 13 from being broken.

It has been verified that the protective film module 1 can reach the IP67 diving protection level, and the protective film assembly 2 is added to the upper surface of the protective film module 1, which can achieve IP66 strong flushing protection level.

The thickness dimensions and component dimensions of the protective film assembly 1 and the protective mesh assembly 2 are determined by the design of the product structure.

In addition, the shape of the pellicle assembly 1 and the fender assembly 2 may be designed to be square, circular or other shapes depending on design requirements.

The sheets, meshes and adhesives in the above protective film assembly 1 and the protective mesh assembly 2 are not the only materials of choice, as long as they meet their functional and performance requirements.

The above description of the dustproof and waterproof mesh of the electroacoustic device of the disclosed embodiment of the present invention enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not limited to the embodiments shown herein, but rather conforms to the principles and novel features disclosed herein. The widest range of consistency.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

Rights request

A dustproof and waterproof net for an electroacoustic device, characterized in that the dustproof and waterproof net comprises a protective film assembly;

The pellicle assembly comprises a mesh cloth, a non-porous sheet bonded to the mesh cloth, a film bonded to the non-porous sheet, and a foam bonded to the film;

The mesh is bonded to the electroacoustic device by a first adhesive.

2. The dustproof and waterproof net of an electroacoustic device according to claim 1, wherein the dustproof waterproof net further comprises a protective net assembly bonded to the pellicle assembly.

3. The dustproof and waterproof net of the electroacoustic device according to claim 2, wherein the protective net assembly comprises an apertured sheet;

The apertured sheet is bonded to the foam of the pellicle membrane or the outer casing of the electroacoustic device by a second adhesive.

4. The dustproof and waterproof net of the electroacoustic device according to claim 1, wherein between the mesh and the non-porous sheet, between the non-porous sheet and the film, Both the film and the foam are bonded by a double-sided adhesive with a substrate.

A dustproof and waterproof net for an electroacoustic device according to claim 1, wherein the foam is an elastic foam.

A dustproof and waterproof net for an electroacoustic device according to claim 1, wherein the film is a microporous film.

7. The dustproof and waterproof net of an electroacoustic device according to claim 1, wherein the film has a thickness of 0.01 to 0.035 mm.

8. The dustproof and waterproof net of an electroacoustic device according to claim 1, wherein the mesh is a mesh cloth.

9. The dustproof and waterproof net of an electroacoustic device according to claim 1, wherein the first adhesive agent is a double-sided waterproof adhesive with a substrate.