A diaphragm with functional parts and its preparation method

Abstract

The present invention discloses a diaphragm with functional components and a method for preparing the same. The functional blocks are integrated into the diaphragm using an integrated molding process. Different compositions and structures are applied to different areas of the diaphragm using a spray coating process according to design requirements. This allows for convenient and efficient integration of functional components with specialized properties into the diaphragm, improving the diaphragm's performance in different dimensions. Furthermore, the functional components maintain their three-dimensional form and preset position during integration with the substrate, preventing adverse effects on the diaphragm's molding process and preventing significant changes in form and position that could cause them to fail due to diaphragm molding.

Description

Technical Field

[0001] The present invention relates to the technical field of loudspeaker diaphragms, and more particularly, to a diaphragm with functional parts and a preparation method thereof. Background Art

[0002] Speakers are electroacoustic transducers that convert electrical signals into sound signals and radiate them into the air. They are widely used in existing electronic products. Speakers typically consist of three parts: a magnetic circuit system, a vibration system, and a support system. When the coil of the vibration system is energized, it generates an induced magnetic field that interacts with the magnetic field of the magnetic circuit system to generate an upward or downward force, driving the diaphragm of the vibration system to vibrate, pushing the air to produce sound.

[0003] The diaphragm is generally made of a single-layer or multi-layer film. Those skilled in the art can adjust the vibration plate structure and specific material of the film according to specific needs so that the diaphragm has relevant acoustic properties, such as:

[0004] Invention application CN107129687A improves the elasticity, structural strength and tear resistance of the diaphragm by specifically selecting the material of the single-layer diaphragm structure;

[0005] Invention application CN111263274A improves the structure and specific material of the vibration plate of the multi-layer diaphragm to timely dissipate heat from the sound-generating device or electronic device, reducing temperature rise, effectively avoiding the limitation of sound generation capacity by temperature protection, and enabling the sound-generating device or electronic device to achieve better loudness;

[0006] Invention application CN109936804A improves the vibration plate structure of the diaphragm by thickening or shaping the folding ring or corner areas to increase the compliance of the diaphragm, reduce low-frequency distortion, and improve the performance of the diaphragm.

[0007] With the development of modern society, speakers are becoming more and more miniaturized. However, micro speakers are small in size and light in weight, which has great limitations in performance design. At present, the diaphragm of micro speakers is usually as shown in Figure 1 and Figure 2 As shown, further magnification shows that its microstructure is often as follows Figure 3 As shown, it is composed of a single or multi-layer film to provide the stiffness and damping performance required for acoustics. Existing diaphragm solutions rarely have special functionalities (such as thermal conductivity, electrical conductivity, etc.), and often focus only on the characteristics of the diaphragm's acoustic performance.

[0008] Regarding the research on giving functionality to the diaphragm of a micro-speaker, the common technical solutions in this field are: 1) blending the base material and the functional material; 2) adding a functional layer to the base structure. The former directly changes the specific non-acoustic properties of the base material, while the latter forms a multi-layer structure together with the base structure. Although the former can improve the specific non-acoustic properties of the base material to a certain extent, as the amount of functional material added increases, the non-acoustic performance is improved while the acoustic performance of the base material deteriorates. The functional layer of the latter is superimposed on the base structure, and the shape needs to be consistent with the base structure (in the form of a lamellar layer covering the base structure), so it will have a great impact on the subsequent three-dimensional molding of the diaphragm, such as folding ring molding, etc., which will cause the molding to be not in place or the functional layer to break directly during the molding process. Summary of the Invention

[0009] In response to the above-mentioned defects of the prior art, the present invention provides a method for preparing a diaphragm with functional parts, which is introduced into the diaphragm by an integrated molding method, and a diaphragm with functional parts is prepared by using different compositions and structures in different areas according to design requirements by spraying.

[0010] The present invention provides a diaphragm, characterized in that it comprises a base portion and a functional part, wherein the base portion is at least partially formed by spraying; or the functional part is at least partially formed by spraying.

[0011] The diaphragm is characterized in that the contact surface between the functional part and the base is at least partially tightly connected by spraying.

[0012] The diaphragm is characterized in that the functional part is a three-dimensional structure formed by a plurality of identical / different planes and / or curved surfaces.

[0013] The diaphragm is characterized in that the functional part is a three-dimensional structure composed of a single curved surface.

[0014] The diaphragm is characterized in that the functional parts can be one or more.

[0015] The diaphragm is characterized in that the functional part is a combination of one or more of conductive materials, magnetic materials, magnetic conductive materials, thermal conductive materials, photosensitive materials, sound absorbing materials, mechanical reinforcement materials, etc.

[0016] The diaphragm is characterized in that the base part is a combination of one or more types of engineering plastics, elastomers, and rubbers.

[0017] The present invention also provides a diaphragm assembled in a loudspeaker module, characterized in that the diaphragm is connected to some components of the loudspeaker module by spraying.

[0018] The diaphragm assembled in the speaker module is characterized in that some components of the speaker module include a combination of one or more components such as a voice coil, a basin frame, and a sensor.

[0019] The diaphragm assembled in the speaker module is characterized in that the diaphragm includes a base portion and a functional part.

[0020] The diaphragm assembled in the speaker module is characterized in that the base portion is connected to some components of the speaker module by spraying.

[0021] The diaphragm assembled in the speaker module is characterized in that the functional parts are connected to some components of the speaker module by spraying.

[0022] The present invention also provides a diaphragm, characterized in that it includes a base portion and a functional part, wherein the diaphragm is at least partially formed by spraying, and the functional part is used for conducting electricity.

[0023] The diaphragm is characterized in that the functional part is exposed on the lower surface of the diaphragm and is connected to the voice coil.

[0024] The diaphragm is characterized in that the functional part is connected to the lead interface.

[0025] The diaphragm is characterized in that the functional part is arranged at the position of the racetrack-shaped protrusion of the diaphragm.

[0026] The diaphragm is characterized in that the functional part is a combination of one or more metal materials, alloys, composite metals, and special functional conductive materials.

[0027] The present invention also provides a method for preparing a diaphragm with functional parts, which is characterized in that it includes the following steps: step 1, placing an insert in a mold; step 2, preparing at least a part of the diaphragm by spraying.

[0028] The method for preparing the diaphragm with functional parts is characterized in that it further includes step three, post-curing the diaphragm.

[0029] The method for preparing a diaphragm with functional parts is characterized in that at least one part of the diaphragm prepared by spraying includes spraying a substrate or spraying a functional part.

[0030] The method for preparing a diaphragm with functional parts is characterized in that at least one portion of the diaphragm prepared by spraying includes one or more layers.

[0031] The method for preparing the diaphragm with functional parts is characterized in that each layer needs to be cured after spraying.

[0032] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art:

[0033] (1) The present invention can conveniently and efficiently integrate functional parts with special functions into the diaphragm, thereby improving the performance of the diaphragm in a specific dimension.

[0034] (2) The structure, shape, and placement of functional parts are controllable and can be designed according to actual needs.

[0035] (3) The shape and structure of functional parts can be designed arbitrarily, and the formation method is simple. There is no need to worry about material restrictions. Any shape and any material can be combined to improve the optional technical means.

[0036] (4) A three-dimensional shape is directly formed during the preparation process without the need for subsequent processing steps, and the shape / position of the functional parts will not be significantly changed due to the subsequent diaphragm molding process, resulting in their failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1A Schematic top view of a loudspeaker diaphragm 100 in the prior art.

[0038] Figure 1B It is a front cross-sectional schematic diagram of a loudspeaker diaphragm 100 in the prior art.

[0039] Figure 1C It is a partially enlarged diagram of a front cross-sectional schematic diagram of a loudspeaker diaphragm 100 in the prior art.

[0040] Figure 2 Schematic diagram of front cross-section of various diaphragms 200 with functional components in the present invention.

[0041] Figure 3 Schematic top cross-sectional views of various diaphragms 200 with functional components in the present invention.

[0042] Figure 4 It is a partial structural schematic diagram of various diaphragms 200 with functional components in the present invention.

[0043] Figure 5 Schematic diagram of a process for preparing a diaphragm with functional components 500 according to the present invention.

[0044] Figure 6 Schematic diagram of a process 600 for preparing a substrate and functional parts on a mold according to the present invention.

[0045] Figure 7 Schematic diagram of a process 700 for preparing a substrate and functional parts on a mold according to the present invention.

[0046] The marks in the figure indicate:

[0047] 110 - first membrane layer, 120 - second membrane layer, 130 - third membrane layer.

[0048] 210-functional parts, 220-base. DETAILED DESCRIPTION

[0049] The present invention will be described in detail and specifically below through specific examples to provide a better understanding of the present invention, but the following examples do not limit the scope of the present invention.

[0050] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatuses.

[0051] Figure 1A 、 1B 1C and 1C are respectively a top view schematic diagram, a front view cross-sectional schematic diagram and a partially enlarged view of the front view cross-sectional schematic diagram of the speaker diaphragm 100 in the prior art. The speaker diaphragm 100 in the prior art is usually a rounded rectangle and is provided with a circle of runway-shaped protrusions, which divide the diaphragm 100 into a central part and an edge part. When the diaphragm 100 is assembled in the speaker module, the central part is usually connected to the voice coil and the edge part is connected to the basin frame. The speaker diaphragm 100 in the prior art can be a single-layer or multi-layer structure. The diaphragm 100 is designed to be a multi-layer structure in order to improve its mechanical and acoustic properties. Figure 1CIn the present invention, the speaker diaphragm 100 includes a first membrane layer 110, a second membrane layer 120 and a third membrane layer 130. In the prior art, the first membrane layer 110, the second membrane layer 120 and the third membrane layer 130 can be made of the same material or different materials. At least one of the first membrane layer 110, the second membrane layer 120 and the third membrane layer 130 has the same area and shape as the diaphragm 100. In the prior art, the first membrane layer 110, the second membrane layer 120 and the third membrane layer 130 are connected by bonding and / or hot pressing, and then the racetrack-shaped protrusion is formed by molding or the like. The problem is that the adhesive connection has high requirements for glue, and the presence of glue will reduce the acoustic performance of the diaphragm, and it is easy to cause interlayer cracking in the later stage; the hot pressing connection greatly limits the structural design of each layer of the diaphragm. For example, if the second layer of membrane 120 is designed to have a special shape, then during the hot pressing process, the special shape will be completely destroyed and the position will move, thereby losing the function it should have.

[0052] Figure 2 Schematic diagram of the front cross section of various diaphragms 200 with functional parts in the present invention. Figure 2 As shown, the diaphragm 200 includes a functional component 210 and a base 220. The functional component 210 is used to enhance the specific dimensional performance of the diaphragm 200, such as electrical conductivity, magnetic properties, thermal conductivity, light transmittance, acoustic properties, and mechanical properties. The base 220 is used to form the main structure of the diaphragm 200. It should be noted that the racetrack-shaped protrusion of the diaphragm 200 is omitted here. It is understood that the racetrack-shaped protrusion can be set at any position on the diaphragm 200.

[0053] The functional component 210 can be placed at any position on the base 220 as needed. In some embodiments, the functional component 210 is placed in the middle of the base 220. In some embodiments, the functional component 210 is placed at the edge of the base 220. In some embodiments, multiple functional components 210 are placed in the middle and at the edge of the base 220. In some embodiments, the functional component 210 extends horizontally through the entire base 220. In some embodiments, the functional component 210 contacts the base 220 only on the side surface and does not contact the base 220 on the upper and lower end surfaces. In some embodiments, the functional component 210 contacts the base 220 only on the upper and lower end surfaces and does not contact the base 220 on the side surface. In some embodiments, at least part of the side surface and the upper and / or lower end surface of the functional component 210 contact the base 220. In some embodiments, the functional component 210 is completely embedded in the base 220. In some embodiments, the upper and lower end surfaces of the diaphragm 200 formed by the functional component 210 and the base 220 are both flat surfaces. In other embodiments, the upper end surface and / or the lower end surface of the diaphragm 200 is a surface with grooves / protrusions.

[0054] At least a portion of the diaphragm 200 is formed by spraying. At least a portion of the contact surface between the functional component 210 and the base 220 of the diaphragm 200 is tightly connected by spraying.

[0055] The functional component 210 can be configured in any form as needed. The functional component 210 can be divided into one or more parts and continuously / dispersively arranged in the base layer 220. The base layer 220 can be designed as a single layer / multi-layer as needed, and the materials of each layer can be the same / different.

[0056] Figure 3 Schematic diagram of top view of various diaphragms 200 with functional parts in the present invention. Figure 3 As shown, the diaphragm 200 includes a functional component 210 and a base 220. In some embodiments, at least a portion of the diaphragm 200 is formed by spraying. It should be noted that the racetrack-shaped protrusion of the diaphragm 200 is omitted here. It is understood that the racetrack-shaped protrusion can be located anywhere on the diaphragm 200.

[0057] The functional part 210 can be placed at any position of the base 220 as needed. In some embodiments, the functional part 210 is placed in the middle of the base 220. In some embodiments, the functional part 210 is placed at the edge of the base 220. In some embodiments, multiple functional parts 210 are placed in the middle and at the edge of the base 220 respectively. In some embodiments, the functional part 210 can be a continuous whole. In some embodiments, the functional part 210 can be a plurality of parts dispersed in the base 220, and the different parts can be in at least partial contact with each other, or they may not be in contact with each other. The functional part 210 can be a three-dimensional structure formed by a plurality of identical / different planes and / or curved surfaces, or it can be a three-dimensional structure formed by a single curved surface (i.e., a sphere).

[0058] Figure 4 Schematic diagram of the partial structure of the diaphragm 200 with various functional parts in the present invention. Figure 4 As shown, the diaphragm 200 includes a functional component 210 and a base 220. In some embodiments, at least a portion of the diaphragm 200 is spray-coated. The functional component 210 can be completely embedded in the base 220, or a portion of its surface can be unenclosed by the base 220. The functional component 210 can be a single component or a plurality of components. The material, structural form, and assembly position of the functional component 210 can be designed as required.

[0059] The materials of the base 220 and the functional component 210 can be the same or different. In some embodiments, the base 220 can be an engineering plastic, such as a combination of one or more of PEEK, PEI, PAR, PEN, etc. In some embodiments, the base 220 can be an elastomer, such as a combination of one or more of TPU, TPE, TPEE, TPV, SIS, SBS, etc. In some embodiments, the base 220 can be a rubber, such as a combination of one or more of styrene-butadiene rubber, nitrile rubber, natural rubber, silicone rubber, fluorosilicone rubber, acrylic rubber, polyurethane rubber, etc. In some embodiments, the base 220 can be a combination of one or more of engineering plastics, elastomers, rubbers, etc. The functional component 210 has special functional properties, such as electrical, magnetic, thermal, optical, acoustic, and mechanical properties. The material of the functional component 210 can be a combination of one or more of conductive materials, magnetic or permeable materials, thermally conductive materials, photosensitive materials, sound-absorbing materials, and mechanically reinforcing materials.

[0060] In some embodiments, the functional component 210 is a component for conducting electricity. In some embodiments, the functional component 210 is used to connect the voice coil and the lead interface to enable power to the voice coil. In some embodiments, the functional component 210 can be a combination of one or more metal materials (such as copper, aluminum, silver, gold, etc.), alloys (such as copper alloys, aluminum alloys, etc.), composite metals (such as copper-aluminum composite metals, copper-silver composite metals, etc.), and special functional conductive materials (such as conductive plastics, conductive rubbers, conductive coatings, conductive pastes, etc.). In some embodiments, a portion of the functional component 210 is disposed on the track-shaped protrusion of the diaphragm 200. In some embodiments, a portion of the functional component 210 is exposed on the lower surface of the diaphragm 200 and is directly connected to the voice coil.

[0061] Figure 5 It is a flow chart of a method 500 for preparing a diaphragm with functional parts in the present invention. In step 510, the material of the substrate, the material of the functional parts, the inserts and the molding mold are determined. The inserts are one or more components that are prefabricated and are not used to improve the various performances of the diaphragm. In some embodiments, the inserts are used to connect the diaphragm to the speaker module, such as a voice coil, a basin frame, etc. In some embodiments, the inserts are used to monitor the state and position of the diaphragm, such as sensors, etc. The bottom surface of the molding mold can be flat or three-dimensional. In some embodiments, the bottom surface of the molding mold is a rounded rectangular plane. In some embodiments, the bottom surface of the molding mold is a rounded rectangular three-dimensional structure with a runway-shaped protrusion.

[0062] In step 520 , it is determined whether the insert needs to be pre-installed in the mold. If the insert needs to be pre-installed in the mold, the process proceeds to step 530 ; if the insert does not need to be pre-installed in the mold, the process proceeds to step 540 .

[0063] In step 530, an insert is placed in a specific location in the mold. In some embodiments, the insert is a voice coil and / or a base frame. Fabricating the diaphragm directly on the voice coil and / or base frame can reduce the number of assembly steps required after the diaphragm is formed and also provide a more stable operating environment for the diaphragm in the speaker module.

[0064] In step 540, the substrate and functional components are prepared on the mold. Preparation methods primarily include spraying. In some embodiments, spraying path planning is performed based on the input substrate material, substrate shape design, functional component material, functional component shape design, and functional component location. The spraying path planning can be automatically generated by the spraying machine or manually designed and coded. The functional components can be prefabricated, prepared during the preparation process, or partially prefabricated and partially prepared during the preparation process.

[0065] In step 550 , the sprayed film is judged to determine whether post-curing is required. If post-curing is required, the process proceeds to step 560 ; if post-curing is not required, the process proceeds to step 570 .

[0066] In step 560, the sprayed film is post-cured to obtain a complete film. Post-curing can include a combination of heating, light, moisture, or other methods. The post-curing method can be selected based on the substrate material and the functional component material.

[0067] In step 570 , the diaphragm membrane is demolded, thereby completing the preparation of the diaphragm membrane.

[0068] In step 540 of the aforementioned manufacturing method 500 , a base and a functional component are prepared on a mold. In some embodiments, the manufacturing method in this step may be manufacturing method 600 . Figure 6 Schematic diagram of a process 600 for preparing a substrate and functional parts on a mold according to the present invention.

[0069] In step 610, the substrate material and functional components are determined. In some embodiments, a spray path is planned based on the input substrate material, substrate shape design, and the shape and position of the functional components. In some embodiments, the functional components are prefabricated. The spray path plan can be automatically generated by the spray machine or manually designed and coded.

[0070] In step 620 , it is determined whether the functional component should be placed at this time. If not, the process proceeds to step 630 ; if so, the process proceeds to step 650 .

[0071] In step 630, the spraying device sprays the base material according to the first path designed in the spraying path planning. In some embodiments, the first path is S-shaped. In some embodiments, the first path is U-shaped.

[0072] After each layer is sprayed, the process proceeds to step 640 to determine whether the film size has reached a first threshold. In some embodiments, the film size may be the thickness of the film. In some embodiments, the first threshold is a predetermined height at which functional component placement should begin. If the film size has not reached the first threshold, the process proceeds to step 630, where the base material is sprayed again along the first path. If the film size has reached the first threshold, the process proceeds to step 620. In step 620, if it is determined that functional component placement is appropriate, the process proceeds to step 650.

[0073] In step 650, the prefabricated functional components are placed. The functional components can be placed automatically by the equipment or manually adjusted.

[0074] In step 660 , the base material is sprayed according to the second path designed in the aforementioned preset spray path planning.

[0075] After each layer is sprayed, the process proceeds to step 670 to determine whether the film size has reached a second threshold. In some embodiments, the film size may be the film thickness. In some embodiments, the second threshold is the predetermined height required for the final film formation. If the film size does not reach the second threshold, the process proceeds to step 660, where the base material is sprayed again using the second diameter. If the film size reaches the second threshold, the process proceeds to step 680. This completes the preparation of the base and functional components.

[0076] In step 540 of the aforementioned manufacturing method 500 , a base and a functional component are prepared on a mold. In some embodiments, the manufacturing method in this step may be manufacturing method 700 . Figure 7 Schematic diagram of a process 700 for preparing a substrate and functional parts on a mold according to the present invention.

[0077] In step 710, the base material and functional component materials are determined. In some embodiments, a spray path is planned based on the input base material, base shape design, functional component material, functional component shape, and position. In some embodiments, the functional components are sprayed during this preparation process. The spray path plan can be automatically generated by the spraying machine or manually designed and coded.

[0078] In step 720 , it is determined whether the functional component is to be prepared at this time. If not, the process proceeds to step 730 ; if so, the process proceeds to step 750 .

[0079] In step 730, the spraying device sprays the base material according to the first path designed in the spraying path planning. In some embodiments, the first path is S-shaped. In some embodiments, the first path is U-shaped.

[0080] After each layer is sprayed, the process proceeds to step 740 to determine whether the film size has reached a first threshold. In some embodiments, the film size may be the thickness of the film. In some embodiments, the first threshold is a predetermined height at which the functional component preparation process should begin. If the film size has not reached the first threshold, the process proceeds to step 730, where the base material is sprayed again using the first path. If the film size has reached the first threshold, the process proceeds to step 720. In step 720, if it is determined that the functional component preparation process should now begin, the process proceeds to step 750.

[0081] In step 750, one or more path combinations are determined. In some embodiments, the path can be a combination of a functional component preparation path and a base material preparation path. In some embodiments, the path can still be the first path.

[0082] In step 760, the base material is sprayed according to the second path designed in the aforementioned preset spray path plan. In some embodiments, the functional component material can be sprayed at the preset location first, followed by the base material spraying. In some embodiments, the first spray path can be continued, and when the functional component reaches the preset location, the nozzle / feed port, etc. are replaced to prepare the functional component. When the functional component leaves the preset location, the nozzle / feed port, etc. are replaced again to prepare the base material.

[0083] After each layer is sprayed, the process proceeds to step 770 to determine whether the film size has reached a second threshold. In some embodiments, the film size may be the film thickness. In some embodiments, the second threshold is the predetermined height required for the final film formation. If the film size does not reach the second threshold, the process proceeds to step 760, where the base material is sprayed again using the second diameter. If the film size reaches the second threshold, the process proceeds to step 780. This completes the preparation of the base and functional components.

[0084] It will be understood that the above examples are only used to illustrate the preparation process and are not intended to limit the scope of protection of the present invention. In some embodiments, it is necessary to set separate functional parts at multiple different heights. Then, after the film size reaches the second threshold, it is necessary to re-spray the base material according to the first path to reach the third threshold, and then enter the combination of multiple paths to prepare the base and functional parts at the same time. In some embodiments, it is necessary to form one or more prefabricated functional parts and one or more functional parts to be prepared in the film at the same time, then it is necessary to combine preparation method 600 and preparation method 700. In some embodiments, each layer needs to be cured after spraying. In some embodiments, some layers need to be cured after spraying. In some embodiments, no curing is required after each layer is sprayed.

[0085] The diaphragm prepared by the present invention is at least partially formed by spraying, so the base and the functional parts do not need to be connected by traditional hot pressing, bonding, etc., which reduces the preparation steps while fully improving the connection strength between the components and maintaining the acoustic performance of the base to the greatest extent.

[0086] While the specific embodiments of the present invention have been described in detail above, these are merely exemplary and the present invention is not limited thereto. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, any equivalent changes and modifications made without departing from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention.

Claims

1. A method for preparing a diaphragm, characterized in that: The diaphragm includes a base portion and a functional component, and the preparation method includes the following steps: Step 1: Determine the material of the base, the material of the functional parts, the inserts and the molding die; Step 2: Determine whether the insert needs to be pre-placed in the mold. If the insert needs to be pre-placed in the mold, proceed to step 3; if the insert does not need to be pre-placed in the mold, proceed to step 4. Step 3: Place the insert in a specific position of the mold; Step 4: Prepare the base and functional parts on the mold by spraying. The spraying path is planned based on the input base material, base shape design, functional part material, functional part shape design, and functional part position. Step 5: Determine whether the sprayed film needs to be post-cured. If post-curing is required, proceed to step 6; if not, proceed to step 7. Step 6: Post-curing the sprayed film to obtain a complete film. The post-curing treatment includes one or more combinations of heating, light, moisture, etc. Step seven: demold the diaphragm membrane body, thus completing the preparation of the diaphragm membrane body.

2. The method for preparing a diaphragm according to claim 1, wherein the steps include: Step 1: Confirm the base material and functional parts. The functional parts are prefabricated. Plan the spraying path based on the input base material, base shape design, and the shape and position of the functional parts. Step 2: Determine whether to place the functional component at this time. If not, proceed to step 3. If so, proceed to step 5. In step 3, the spraying equipment sprays the base material according to the first path designed in the aforementioned spray path planning. After completing the spraying of each layer, the process proceeds to step 4 to determine whether the film size has reached the first threshold. If the film size has not reached the first threshold, the process proceeds to step 3 and sprays the base material again according to the first path. If the film size has reached the first threshold, the process proceeds to step 2. In step 2, if it is determined that the functional component should be placed at this time, the process proceeds to step 5. Step 5: Place the prefabricated functional parts; Step 6: spraying the base material according to the second path designed in the aforementioned spraying path planning; After completing the spraying of each layer, proceed to step seven to determine whether the film size reaches the second threshold. If the film size does not reach the second threshold, proceed to step six and spray the base material again according to the second diameter; if the film size reaches the second threshold, proceed to step eight to complete the preparation of the base and functional parts.

3. The method for preparing a diaphragm according to claim 1, wherein the steps include: Step 1: Confirm the base material and functional component material; plan the spraying path based on the input base material, base shape design, functional component material, functional component shape and position; Step 2: Determine whether to prepare the functional parts at this time. If not, proceed to step 3. If so, proceed to step 5. Step 3: The spraying equipment sprays the base material according to the first path designed in the aforementioned spraying path planning; After each layer is sprayed, the process proceeds to step 4 to determine whether the film size has reached a first threshold. If the film size has not reached the first threshold, the process proceeds to step 3 to spray the base material again according to the first path. If the film size has reached the first threshold, the process proceeds to step 2. In step 2, if it is determined that a functional component should be prepared at this time, the process proceeds to step 5. Step 5: determine one or more path combinations; Step 6: spraying the base material according to the second path designed in the aforementioned spray path planning, wherein: 1) the functional component material is sprayed first at the preset position, and then the base material is sprayed; or 2) the spraying is still carried out according to the first path. When the functional component is at the preset position, the nozzle / feed port is replaced to prepare the functional component; when the functional component is out of the preset position, the nozzle / feed port is replaced again to prepare the base material; After completing the spraying of each layer, proceed to step seven to determine whether the film size reaches the second threshold. If the film size does not reach the second threshold, proceed to step six and spray the base material again according to the second diameter; if the film size reaches the second threshold, proceed to step eight to complete the preparation of the base and functional parts.

4. The method for preparing a diaphragm according to claim 1, wherein: The functional part is a three-dimensional structure formed by a plurality of identical / different planes and / or curved surfaces.

5. The method for preparing a diaphragm according to claim 1, wherein: The functional part is a three-dimensional structure composed of a single curved surface.

6. The method for preparing a diaphragm according to claim 1, characterized in that: The functional parts are one or more.

7. The method for preparing a diaphragm according to claim 1, wherein: The functional part is a combination of one or more of conductive materials, magnetic materials, magnetic conductive materials, thermal conductive materials, photosensitive materials, sound absorbing materials, mechanical reinforcement materials, etc.

8. The method for preparing a diaphragm according to claim 7, characterized in that: The functional part is used for conducting electricity.

9. The method for preparing a diaphragm according to claim 7, characterized in that: The functional component is a combination of one or more metal materials, alloys, composite metals, and special functional conductive materials.

10. The method for preparing a diaphragm according to claim 1, characterized in that: The base part is a combination of one or more of engineering plastics, elastomers and rubbers.

11. The method for preparing a diaphragm according to claim 1, wherein: The functional component is exposed on the lower surface of the diaphragm and is connected to the voice coil.

12. The method for preparing a diaphragm according to claim 1, characterized in that: The functional component is connected to the lead interface.

13. The method for preparing a diaphragm according to claim 1, characterized in that: The functional part is arranged at the position of the racetrack-shaped protrusion of the diaphragm.

14. A method for assembling a diaphragm in a loudspeaker module, characterized in that: Utilize the method described in any one of claims 1-3 to connect the diaphragm to some components of the speaker module through the spraying.

15. The method for assembling a diaphragm in a loudspeaker module according to claim 14, wherein: Some components of the speaker module include a voice coil, a basin frame, a sensor, and a combination of one or more.

16. The method for assembling a diaphragm in a loudspeaker module according to claim 14, wherein: The diaphragm includes a base portion and a functional part.

17. A method for assembling a diaphragm in a loudspeaker module according to claim 16, characterized in that: The base part is connected to some components of the speaker module by spraying.

18. The method for assembling a diaphragm in a loudspeaker module according to claim 16, wherein: The functional parts are connected to some components of the speaker module by spraying.

19. The method for assembling a diaphragm in a loudspeaker module according to claim 16, wherein: The diaphragm is at least partially formed by spraying, and the functional part is used for conducting electricity.

20. The method for assembling a diaphragm in a loudspeaker module according to claim 19, wherein: The functional component is exposed on the lower surface of the diaphragm and is connected to the voice coil.

21. The method for assembling a diaphragm in a loudspeaker module according to claim 19, wherein: The functional component is connected to the lead interface.

22. The method for assembling a diaphragm in a loudspeaker module according to claim 19, wherein: The functional part is arranged at the position of the racetrack-shaped protrusion of the diaphragm.

23. The method for assembling a diaphragm in a loudspeaker module according to claim 19, wherein: The functional component is a combination of one or more metal materials, alloys, composite metals, and special functional conductive materials.

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