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Vibrating diaphragm base material, preparation method thereof, vibrating diaphragm and loudspeaker

A technology of membrane substrate and damping material, applied in the field of loudspeakers, can solve problems such as offset, and achieve the effects of improving stability, suppressing variation, and high structural strength

Inactive Publication Date: 2019-06-18
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the figure, we can see that the amplitude of the same point on the product has a significant shift under the test conditions of 20ms and 500ms for the existing diaphragm base material

Method used

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  • Vibrating diaphragm base material, preparation method thereof, vibrating diaphragm and loudspeaker
  • Vibrating diaphragm base material, preparation method thereof, vibrating diaphragm and loudspeaker
  • Vibrating diaphragm base material, preparation method thereof, vibrating diaphragm and loudspeaker

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Embodiment 1

[0035] Such as Figure 2-5 As shown, a diaphragm substrate 1 provided by Embodiment 1 of the present invention includes a polymer material layer 11 made of a polymer material and a porous damping material layer 12 made of a porous damping material. The polymer material layer 11 The stack is fixed on a layer 12 of porous damping material. Because the porous damping material layer 12 is added to the diaphragm base material 1 of this embodiment, the porous damping material has a higher structural strength and can suppress the shrinkage of the polymer material, thus ensuring the use of the diaphragm base material 1 of this embodiment The size of the manufactured product remains consistent, and the diaphragm substrate 1 of this embodiment can suppress and improve the performance variation of polymer materials under high temperature conditions, so the amplitude of products such as speakers using the diaphragm substrate 1 of this embodiment increases with temperature. The high offse...

Embodiment 2

[0048] Such as Figure 8 As shown, the difference between the present embodiment and the first embodiment is that, in the first embodiment, the polymer material layer 11 and the porous damping material layer 12 are fixed together by bonding; while in the present embodiment, the polymer material layer 11 The polymer material layer 11 is fixed together with the porous damping material layer 12 by high temperature molding, and the polymer material made of the polymer material layer 11 is embedded in the through hole 121 in the porous damping material layer 12 .

[0049] Such as Figure 9 As shown, it is the vibration amplitude change diagram of the vibrating film base material 1 of this embodiment at different temperatures for 20 ms and 500 ms respectively. time. From the figure, we can see that the amplitude deviation of the same point on the product is small under the test conditions of 20 ms and 50 ms for the diaphragm substrate 1 of this embodiment.

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Abstract

The invention discloses a vibrating diaphragm base material and a preparation method thereof, a vibrating diaphragm and a loudspeaker, the vibrating diaphragm base material comprises a high polymer material layer made of a high polymer material and a porous damping material layer made of a porous damping material, and the high polymer material layer is laminated and fixed on the porous damping material layer. The vibrating diaphragm base material has the beneficial effects that (1) the porous damping material has relatively high structural strength and can inhibit the contractibility of a highpolymer material, so that the size of a product prepared from the vibrating diaphragm base material can be kept consistent; And (2) the vibrating diaphragm base material can inhibit and improve the variation of the performance of a high polymer material under a high-temperature condition, so that the amplitude of a loudspeaker and other products adopting the vibrating diaphragm base material is slightly deviated along with the temperature rise, and the stability of the performance of the product is improved.

Description

technical field [0001] The invention relates to the field of acoustic equipment, in particular to a diaphragm base material, a method for preparing the diaphragm base material, a diaphragm prepared by using the diaphragm base material, and a loudspeaker with the diaphragm. Background technique [0002] At present, the base material of the vibrating film is generally made of a polymer material with a small elastic modulus, and these polymer materials have a small elastic modulus and relatively good elasticity. However, because these polymer materials are not resistant to high temperatures, on some products such as speakers, when the temperature rises to a certain level (the product continues to vibrate or do reliability tests), the amplitude of the product will become larger and larger, resulting in offset, resulting in Product swing can directly lead to failure of product performance. figure 1 In order to use the existing diaphragm base material at different temperatures, v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/04H04R9/02H04R9/06H04R31/00
CPCB29D99/005B32B37/12B32B37/1284H04R7/04H04R7/18H04R7/26H04R9/025H04R9/06H04R31/003H04R2307/025H04R2400/11B32B2457/00
Inventor 梁平赵彬尚烨
Owner AAC TECH PTE LTD
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