A new elastic composite flat diaphragm

Abstract

The utility model relates to diaphragm technical field, concretely is a kind of novel elastic composite flat diaphragm, the flat diaphragm includes support and diaphragm component, hollow hole is opened in the support, the diaphragm component is fixed on support, and hollow hole is completely shielded, the diaphragm component includes elastic membrane layer and the metal layer being arranged on the upper and lower ends of elastic membrane layer, electrically conductive coil is arranged at hollow hole on the metal layer, the both ends of electrically conductive coil are all provided with conducting point, and the conducting point and electrically conductive coil are electrically connected, and the protective layer is provided on the end face of electrically conductive coil away from metal layer. The utility model has simple structure, reasonable in design, diaphragm sound production effect is good, service life is long, and electrically conductive coil resistance adjustable, satisfy the use demand of different products, it is worth promoting and using.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm technology, specifically to a novel elastic composite flat panel diaphragm. Background Technology

[0002] Currently, most planar speaker diaphragms are made of polymer thin film materials, with a coil screen-printed on one side of the nanoscale polymer film. This coil, with internal resistance, is printed onto the diaphragm assembly. Due to limitations in area and weight, there are strict requirements for the printed coil. The current use of screen-printed coils has the following drawbacks: 1. The thickness of the diaphragm assembly increases after screen printing, affecting the vibration and sound production, resulting in poor sound quality; 2. Because the diaphragm is an elastic material, the screen-printed coil may break during prolonged vibration, leading to a short product lifespan; 3. Increasing the resistance of the screen-printed coil is very difficult. For example, on a 100mm diameter diaphragm assembly, the maximum single-sided printing is only 64 ohms, which is very small and reaches its limit, still unable to meet the growing demand. To address this problem, the inventors designed a novel elastic composite planar diaphragm. Utility Model Content

[0003] The purpose of this invention is to provide a novel elastic composite flat diaphragm, which has the advantages of simple structure, reasonable design, good sound production effect, long service life, and adjustable resistance of conductive coil, meeting the needs of different products and solving the problems mentioned in the above technical background.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel elastic composite flat panel diaphragm, comprising a support and a diaphragm assembly. The support has a perforated hole, and the diaphragm assembly is fixed on the support, completely covering the perforated hole. The diaphragm assembly includes an elastic membrane layer and metal layers disposed on the upper and lower end faces of the elastic membrane layer. A conductive coil is disposed on the metal layer at the perforated hole, and a conduction point is disposed at both ends of the conductive coil. The conduction point is electrically connected to the conductive coil. A protective layer is disposed on the end face of the conductive coil away from the metal layer.

[0005] Preferably, the bracket is made of insulating plastic material, and the bracket has a first connection hole and a second connection hole.

[0006] Preferably, the first connecting hole and the second connecting hole are symmetrically distributed about the central axis of the bracket.

[0007] Preferably, the silicone film layer is a silicone film with a thickness between 2μm and 100μm.

[0008] Preferably, the metal layer is gold, silver, copper, or aluminum, and its thickness is between 1 μm and 10 μm.

[0009] Preferably, the conductive coil is in the shape of a snake, and the conductive coil is formed on the metal layer using a low-temperature vacuum electroplating process.

[0010] Preferably, the two connecting points extend to the first connecting hole and the second connecting hole respectively, and coincide with the first connecting hole and the second connecting hole.

[0011] Preferably, the protective layer is silver oxide.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model provides a novel elastic composite planar diaphragm, which includes a support and a diaphragm assembly. The overall structure is simple and reasonably designed. By opening a hollow hole in the support, the diaphragm assembly is fixed on the support and the hollow hole is completely covered. The diaphragm assembly includes an elastic membrane layer and metal layers disposed on the upper and lower ends of the elastic membrane layer. A conductive coil is disposed on the metal layer at the hollow hole. A conduction point is disposed at both ends of the conductive coil, which extends to the first connection hole and the second connection hole respectively and coincides with the first connection hole and the second connection hole. The resistance of the conductive coil can be adjusted by the size of the conduction point, thereby meeting the needs of different products. The conductive coil is formed on the diaphragm assembly by a low-temperature vacuum electroplating process. Compared with traditional screen printing, it will not break and has a longer service life. At the same time, the diaphragm assembly can be made thinner and more elastic, resulting in better sound production. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention;

[0015] Figure 2 This is a structural diagram of the bracket of this utility model;

[0016] Figure 3 This is a schematic diagram of the diaphragm assembly structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the diaphragm assembly of this utility model.

[0018] The reference numerals and names in the figure are as follows:

[0019] 1. Support; 11. Hole; 12. First connecting hole; 13. Second connecting hole; 2. Diaphragm assembly; 21. Elastic membrane layer; 22. Metal layer; 3. Conductive coil; 4. Conductive point; 5. Protective layer. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Please see Figures 1 to 4This utility model provides an embodiment of a novel elastic composite planar diaphragm. The planar diaphragm includes a support 1 and a diaphragm assembly 2. The overall structure is simple and reasonably designed. The support 1 is made of insulating plastic material and has a first connecting hole 12 and a second connecting hole 13. The first connecting hole 12 and the second connecting hole 13 are symmetrically distributed about the central axis of the support 1. A perforated hole 11 is provided on the support 1. The diaphragm assembly 2 is fixed on the support 1 and completely covers the perforated hole 11. The diaphragm assembly 2 includes an elastic membrane layer 21 and metal layers 22 disposed on the upper and lower end faces of the elastic membrane layer 21. The perforated hole 11 is located on the metal layer 22. A conductive coil 3 is provided at the hole 11. Each end of the conductive coil 3 is provided with a connection point 4. The connection point 4 is electrically connected to the conductive coil 3. When the conductive coil 3 is energized, the conductive coil 3 can vibrate and produce sound at the hole 11 together with the diaphragm assembly 2. A protective layer 5 is provided on the end face of the conductive coil 3 away from the metal layer 22. In specific implementation, the two connection points 4 extend to the first connection hole 12 and the second connection hole 13 respectively, and coincide with the first connection hole 12 and the second connection hole 13. The resistance of the conductive coil 3 can be improved by changing the cross-sectional area of ​​the connection point 4, thereby meeting the usage requirements of different products.

[0024] Specifically, the silicone film layer 21 is a silicone film with a thickness between 2μm and 100μm.

[0025] Specifically, the metal layer 22 is gold, silver, copper, or aluminum, and its thickness is between 1 μm and 10 μm.

[0026] Specifically, the conductive coil 3 is in the shape of a snake, and the conductive coil 3 is formed on the metal layer 22 using a low-temperature vacuum electroplating process. In specific implementations, the conductive coil 3 is formed using copper, gold, or silver materials.

[0027] Specifically, the protective layer 5 is silver oxide, which can protect the conductive coil 3 and thus extend the service life of the diaphragm.

[0028] 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 novel elastic composite planar diaphragm, characterized in that: The device includes a support (1) and a diaphragm assembly (2). The support (1) has a perforated hole (11). The diaphragm assembly (2) is fixed on the support (1) and completely covers the perforated hole (11). The diaphragm assembly (2) includes an elastic membrane layer (21) and a metal layer (22) disposed on the upper and lower ends of the elastic membrane layer (21). A conductive coil (3) is disposed on the metal layer (22) at the perforated hole (11). A conduction point (4) is disposed at both ends of the conductive coil (3). The conduction point (4) is electrically connected to the conductive coil (3). A protective layer (5) is disposed on the end face of the conductive coil (3) away from the metal layer (22).

2. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The bracket (1) is made of insulating plastic material, and the bracket (1) is provided with a first connection hole (12) and a second connection hole (13).

3. The novel elastic composite planar diaphragm according to claim 2, characterized in that: The first connecting hole (12) and the second connecting hole (13) are symmetrically distributed about the central axis of the bracket (1).

4. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The silicone film layer (21) is a silicone film with a thickness between 2μm and 100μm.

5. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The metal layer (22) is gold, silver, copper or aluminum, and its thickness is between 1 μm and 10 μm.

6. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The conductive coil (3) is in the shape of a snake, and the conductive coil (3) is formed on the metal layer (22) by low temperature vacuum electroplating process.

7. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The two connecting points (4) extend to the first connecting hole (12) and the second connecting hole (13) respectively, and coincide with the first connecting hole (12) and the second connecting hole (13).

8. The novel elastic composite planar diaphragm according to claim 1, characterized in that: The protective layer (5) is silver oxide.

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