Reinforced dome and loudspeaker

Abstract

Provided in the present application are an reinforced dome and a loudspeaker. Preparation raw materials for the reinforced dome comprise a main material and an reinforced material added to the main material, the particle size of the reinforced material being 1 nm-5 μm, and the mass percentage of the reinforced material added to the preparation raw materials being 1-50%. The reinforced dome of the present application comprises the main material and the reinforced material added to the main material. The reinforced material is added to the main material so as to enhance the mechanical properties of the dome, such that compared with those of domes in the prior art made of pure polymer materials or metal materials, the elastic modulus of the reinforced dome obtained in the present application is increased while the quality requirements of the dome is ensured, thus improving the high-frequency performance of loudspeaker products.

Description

A reinforced dome and speaker Technical Field

[0001] This application relates to the field of electroacoustic device technology, specifically to an enhanced dome and a loudspeaker. Background Technology

[0002] In existing technologies, the dome of a loudspeaker is generally made of pure plastic or pure metal alloy, resulting in a low elastic modulus, which is not conducive to improving the high-frequency performance of the loudspeaker product.

[0003] Therefore, it is necessary to provide a dome with a high elastic modulus and a loudspeaker with better high-frequency performance. Technical issues

[0004] The purpose of this application is to provide a reinforced dome and a loudspeaker, wherein the reinforced dome has a high elastic modulus and can improve the high-frequency performance of the loudspeaker. Technical solutions

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, this application provides a reinforced dome, wherein the raw materials for preparing the reinforced dome include a main material and a reinforcing material added to the main material; the particle size of the reinforcing material is 1 nm-5 μm, and the mass percentage of the reinforcing material added to the raw materials is 1-50%.

[0007] Optionally, the reinforcing material includes one or more of reinforcing particles, reinforcing whiskers, reinforcing short fibers, or reinforcing long fibers; wherein the particle size of the reinforcing particles is 1 nm-5 μm, and the diameter of the reinforcing whiskers, the reinforcing short fibers, and the reinforcing long fibers is 5 nm-1000 nm with an aspect ratio of 10-10000.

[0008] Optionally, the reinforcing material includes one or more of carbides, borides, nitrides, metal oxides, non-metallic crystalline particles, carbon nanotubes, carbon nanofibers, or graphene.

[0009] Optionally, the carbide includes one or more of silicon carbide, boron carbide, or titanium carbide; the boride includes titanium boride; the nitride includes silicon nitride; the metal oxide includes aluminum oxide; and the non-metallic crystal particles include one or more of carbon, silicon, or graphite crystal particles.

[0010] Optionally, the main material includes either a metallic material or a polymeric material.

[0011] Optionally, the metallic material includes one or more of aluminum alloys, lithium alloys, magnesium alloys, or titanium alloys.

[0012] Optionally, the polymeric material includes one or more of polyetherimide, polyimide, or polycarbonate.

[0013] Secondly, this application provides a loudspeaker that includes the enhanced dome as described above. Beneficial effects

[0014] The beneficial effects of this application are as follows: The reinforced dome described in this application includes a main material and a reinforcing material added to the main material. By adding a reinforcing material to the main material to enhance the mechanical properties of the dome, compared with the domes made of pure polymer materials or metal materials in the prior art, the reinforced dome obtained in this application improves the elastic modulus of the obtained dome while ensuring the quality requirements of the dome, thereby improving the high-frequency performance of the loudspeaker product. Attached Figure Description

[0015] Figure 1 is a comparison of the Fr frequency response curves of the loudspeakers in Example 2 and Comparative Example 1. Embodiments of the present invention

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0017] Example 1: In a first aspect, this application provides a reinforced dome, wherein the raw materials for preparing the reinforced dome include a main material and a reinforcing material added to the main material; the particle size of the reinforcing material is 1 nm-5 μm, and the mass percentage of the reinforcing material added to the raw materials is 1-50%. The reinforced dome of this application includes a main material and a reinforcing material added to the main material. By adding a reinforcing material to the main material to enhance the mechanical properties of the dome, a bonding interface is formed in the resulting reinforced dome. When the reinforced dome is subjected to external force, the stress can be dispersed, thereby improving the elastic modulus of the resulting dome while ensuring the quality requirements of the dome, and thus improving the high-frequency performance of the loudspeaker product.

[0018] Specifically, in this embodiment, the particle size of the reinforcing material is preferably 1nm-5μm. For example, the particle size of the reinforcing material can be 1nm, 50nm, 100nm, 300nm, 500nm, 700nm, 1μm, 3μm, and 5μm. When the particle size is less than 1nm, the reinforcing effect of the dome is not obvious. When the particle size is greater than 5μm, the reinforcing material is prone to entanglement in the main material, resulting in difficulty in dispersion and thus affecting the ductility of the dome. The mass percentage of the reinforcing dome added to the raw material is preferably 1-50%. For example, the mass percentage of the reinforcing material is 1%, 3%, 5%, 8%, 10%, 20%, 30%, 40%, and 50%. In this case, the reinforcing dome can improve the elastic modulus while taking into account ductility.

[0019] Optionally, the reinforcing material includes one or more of reinforcing particles, reinforcing whiskers, reinforcing short fibers, or reinforcing long fibers; specifically, the particle size of the reinforcing particles is 1 nm-5 μm, and the diameter of the reinforcing whiskers, reinforcing short fibers, and reinforcing long fibers is 5 nm-1000 nm with an aspect ratio of 10-10000. It is understood that when the reinforcing material is reinforcing particles, the particle size refers to the particle diameter of the reinforcing particles; when the reinforcing material is reinforcing whiskers, reinforcing short fibers, or reinforcing long fibers, it refers to the length of the reinforcing whiskers, reinforcing short fibers, or reinforcing long fibers.

[0020] Optionally, the reinforcing material includes one or more of carbides, borides, nitrides, metal oxides, non-metallic crystalline particles, carbon nanotubes, carbon nanofibers, or graphene. The reinforcing material can be sourced from suppliers known in the art or prepared using known methods. When the carbon nanotube is used as the reinforcing material, the carbon nanotube can be a standard sample without functional groups; it can also be a functionalized carbon nanotube that has undergone treatment, such as acid treatment; the carbon nanotube may also contain functional groups, which can be carboxyl, hydroxyl, or amino groups. The carbon nanotube can be sourced from suppliers known in the art or prepared using known methods.

[0021] Optionally, the carbide includes one or more of silicon carbide, boron carbide, or titanium carbide; the boride includes titanium boride; the nitride includes silicon nitride; the metal oxide includes aluminum oxide; and the non-metallic crystal particles include one or more of carbon, silicon, or graphite crystal particles.

[0022] Optionally, the main material includes either a metallic material or a polymeric material. In use, the metallic or polymeric material can be selected based on the type of dome to be manufactured and the audio quality requirements of the speaker.

[0023] Optionally, the metallic material includes one or more of aluminum alloys, lithium alloys, magnesium alloys, or titanium alloys.

[0024] Optionally, the polymeric material includes one or more of polyetherimide, polyimide, or polycarbonate.

[0025] Secondly, this application provides a loudspeaker that includes the enhanced dome as described above.

[0026] Example 2: This application provides a loudspeaker, which includes the above-mentioned reinforced dome; specifically, the thickness of the reinforced dome is 0.05mm, and the reinforced dome includes a main material and a reinforcing material, wherein the main material is an aluminum alloy, the reinforcing material has a particle size of 50nm, and the amount of reinforcing material added is 10% of the total mass of the raw materials.

[0027] Comparative Example 1: Compared with Example 2, the difference of Comparative Example 1 is that the reinforcing dome of the speaker in Comparative Example 1 is made of 5052 aluminum alloy with a thickness of 0.05nm.

[0028] The loudspeakers of Example 2 and Comparative Example 1 were subjected to Fr frequency response tests. As shown in Figure 1, compared with Comparative Example 1, the loudspeaker obtained in Example 2 has a lower high-frequency distortion peak and better high-frequency performance.

[0029] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A reinforced ball stud, characterized by, The preparation raw material of the enhanced dome comprises a main material and an enhancing material added in the main material; the particle size of the enhancing material is 1nm-5μm, and the added mass percentage of the enhancing material in the preparation raw material is 1-50%.

2. The reinforced ball joint of claim 1, wherein: The enhancing material comprises one or several of enhancing particles, enhancing whiskers, enhancing short fibers or enhancing long fibers; wherein the particle size of the enhancing particles is 1nm-5μm, the diameter of the enhancing whiskers, the enhancing short fibers and the enhancing long fibers is 5nm-1000nm, and the length-diameter ratio is 10-10000.

3. The reinforced ball joint of claim 1, wherein: The enhancing material comprises one or several of carbide, boride, nitride, metal oxide, non-metal crystal particle, carbon nanotube, carbon nanofiber or graphene.

4. The reinforced ball joint of claim 3, wherein: The carbide comprises one or several of silicon carbide, boron carbide or titanium carbide; the boride comprises titanium boride; the nitride comprises silicon nitride; the metal oxide comprises aluminum oxide; and the non-metal crystal particle comprises one or several of carbon, silicon or graphite crystal particle.

5. The reinforced ball joint of claim 1, wherein: The main material comprises one of metal material or polymer material.

6. The reinforced ball joint of claim 5, wherein: The metal material comprises one or several of aluminum alloy, lithium alloy, magnesium alloy or titanium alloy.

7. The reinforced ball joint of claim 5, wherein: The polymer material comprises one or several of polyetherimide, polyimide or polycarbonate.

8. A loudspeaker, characterized by: The loudspeaker comprises the enhanced dome according to any one of claims 1-7.

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