Composite sound emitting film

Abstract

The utility model relates to the technical field of sound emitting film, concretely is a kind of composite sound emitting film, the sound emitting film includes upper substrate layer, lower substrate layer and the composite layer being arranged between upper substrate layer and lower substrate layer, the composite layer thickness value is between 10 μm-50 μm, and composite layer is formed by using composite technology by several silicon elastic films, and the adjacent two silicon elastic films are all provided with glue layer, and the glue layer is formed on the upper and lower two end surfaces of silicon elastic film using coating process.The utility model has simple structure, reasonable in design, low cost, can satisfy the sound emitting demand of different sound emitting products, and the sound emitting film has high resilience, good sound emitting effect, and is worth popularizing and using.

Description

Technical Field

[0001] This utility model relates to the field of sound-generating membrane technology, specifically a composite sound-generating membrane. Background Technology

[0002] The receiver converts acoustic signals into electrical signals through the vibration of the acoustic diaphragm, and the speaker uses the electrical signals to cause the acoustic diaphragm to vibrate and produce sound. The acoustic diaphragm plays a crucial role in the propagation and conversion of sound. With the development of electronic technology, mobile phones, tablets, and other terminal electronic devices increasingly adopt waterproof technology. Terminal manufacturers also use vacuuming to test whether electronic devices meet waterproof requirements. After vacuuming, the speaker's acoustic diaphragm must withstand a high pressure difference between the inside and outside of the device, causing the diaphragm to stretch and deform. After the test is completed and the pressure returns to normal, the speaker diaphragm needs to return to its original state. This places high demands on the elasticity and resilience of the acoustic diaphragm. Furthermore, existing sound-generating diaphragms have relatively uniform thickness values, complex processing techniques, and high manufacturing costs, and cannot meet the sound production needs of different sound-generating products. To address this problem, the inventors designed a composite sound-generating diaphragm. Utility Model Content

[0003] The purpose of this invention is to provide a composite sound-generating diaphragm that has a simple structure, reasonable design, low cost, and can meet the sound generation needs of different sound-generating products. At the same time, the sound-generating diaphragm has the advantages of high resilience and good sound generation effect, thus solving the problems mentioned in the above technical background.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a composite sound-emitting membrane, comprising an upper substrate layer, a lower substrate layer, and a composite layer disposed between the upper substrate layer and the lower substrate layer, wherein the thickness of the composite layer is between 10μm and 50μm, and the composite layer is formed by a composite process of several silicone elastic films, wherein an adhesive layer is disposed between two adjacent silicone elastic films, and the adhesive layer is formed on the upper and lower end faces of the silicone elastic films by a coating process.

[0005] Preferably, both the upper substrate layer and the lower substrate layer are made of PET material.

[0006] Preferably, the thickness of the silicon elastic film is between 5 μm and 500 μm.

[0007] Preferably, the adhesive layer is a modified acrylic adhesive with a thickness between 10 μm and 50 μm.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. This utility model provides a composite sound-generating membrane, which includes an upper substrate layer, a lower substrate layer, and a composite layer disposed between the upper and lower substrate layers. The composite layer is formed by a composite process of several silicone elastic films. The overall structure is simple, the design is reasonable, the composite process is simple, the cost is low, and it can be automated with high processing efficiency. In addition, the upper and lower substrate layers protect the composite layer and facilitate the composite forming of the sound-generating membrane by automated equipment. An adhesive layer is disposed between each two adjacent silicone elastic films. The adhesive layer is formed on the upper and lower end faces of the silicone elastic films by a coating process. By using silicone elastic films, the silicone elastic films have high resilience and long service life. Furthermore, users can adjust the number of silicone elastic film layers according to actual needs to meet the usage requirements of different sound-generating devices, making it highly practical. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of Embodiment 1 of the present invention;

[0011] Figure 2 This is a cross-sectional view of Embodiment 2 of the present invention;

[0012] Figure 3 This is a cross-sectional view of Embodiment 3 of the present invention;

[0013] Figure 4 This is a cross-sectional view of Embodiment 4 of this utility model.

[0014] The reference numerals and names in the figure are as follows:

[0015] 1. Upper substrate layer; 2. Lower substrate layer; 3. Composite layer; 31. Silicone elastic film; 32. Adhesive layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0019] Example 1:

[0020] Please see Figure 1 This utility model provides an embodiment of a composite sound-emitting membrane, which includes an upper substrate layer 1, a lower substrate layer 2, and a composite layer 3 disposed between the upper substrate layer 1 and the lower substrate layer 2. The upper substrate layer 1 and the lower substrate layer 2 protect the composite layer 3. The thickness of the composite layer 3 is between 10μm and 50μm, and the composite layer 3 is formed by two silicone elastic films 31 using a composite process. The composite process is simple, has low cost, can be automated, and has high processing efficiency. In addition, it is also convenient for automated equipment to composite and form the sound-emitting membrane. An adhesive layer 32 is disposed between each of the two adjacent silicone elastic films 31. The adhesive layer 32 is formed on the upper and lower end faces of the silicone elastic films 31 by a coating process. By using silicone elastic films 31, the silicone elastic films 31 have the advantages of high resilience and long service life, and when used in a sound-emitting membrane, the sound emission effect is better.

[0021] Specifically, both the upper substrate layer 1 and the lower substrate layer 2 are made of PET material. The upper substrate layer 1 and the lower substrate layer 2 protect the composite layer 3. When in use, the upper substrate layer 1 and the lower substrate layer 2 can be removed, making it highly practical.

[0022] Specifically, the thickness of the silicon elastic film 31 is between 5 μm and 500 μm.

[0023] Specifically, the adhesive layer 32 is a modified acrylic adhesive with a thickness between 10μm and 50μm.

[0024] Example 2:

[0025] Please see Figure 2 The second embodiment of this utility model is a composite sound-generating membrane. The structure of this embodiment is basically the same as that of the first embodiment. The difference is that the composite layer 3 is composed of three silicon elastic films 31. The three silicon elastic films 31 are stacked from top to bottom and formed by composite process. Other parts not explained in this embodiment refer to the first embodiment and will not be repeated here.

[0026] Example 3:

[0027] Please see Figure 3 The third embodiment of this utility model is a composite sound-generating membrane. The structure of this embodiment is basically the same as that of the first embodiment. The difference is that the composite layer 3 is composed of a silicone elastic film 31. Adhesive layers 32 are coated on both the upper and lower ends of the silicone elastic film 31. Other parts not explained in this embodiment refer to the first embodiment and will not be described again here.

[0028] Example 4:

[0029] Please see Figure 4 The fourth embodiment of this utility model is a composite sound-generating membrane. The structure of this embodiment is basically the same as that of the first embodiment. The difference is that the composite layer 3 is composed of four silicon elastic films 31. The four silicon elastic films 31 are stacked from top to bottom and formed by composite process. Other parts not explained in this embodiment refer to the first embodiment and will not be repeated here.

[0030] In summary, by adopting the structures in the four embodiments described above, users can adjust the number of layers of the silicon elastic film 31 according to actual needs, thereby meeting the usage requirements of different sound-generating devices, which is highly practical.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite sound-generating diaphragm, characterized in that: The composite layer (3) includes an upper substrate layer (1), a lower substrate layer (2), and a composite layer (3) disposed between the upper substrate layer (1) and the lower substrate layer (2). The thickness of the composite layer (3) is between 10μm and 50μm. The composite layer (3) is formed by a composite process of several silicon elastic films (31). An adhesive layer (32) is disposed between two adjacent silicon elastic films (31). The adhesive layer (32) is formed on the upper and lower end faces of the silicon elastic film (31) by a coating process.

2. The composite sound-generating diaphragm according to claim 1, characterized in that: Both the upper substrate layer (1) and the lower substrate layer (2) are made of PET material.

3. The composite sound-generating diaphragm according to claim 1, characterized in that: The thickness of the silicon elastic film (31) is between 5 μm and 500 μm.

4. The composite sound-generating diaphragm according to claim 1, characterized in that: The adhesive layer (32) is a modified acrylic adhesive with a thickness between 10μm and 50μm.

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