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Diaphragm and preparation method thereof
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A technology of a base material layer and a folded ring part is applied in the field of vibrating film and its preparation, which can solve the problems of limited suppression effect, etc., and achieve the effects of low cost, good uniformity, and improved sound quality
Pending Publication Date: 2020-08-11
SHENZHEN SUNWAY COMM
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Problems solved by technology
At present, most manufacturers will prepare ribs on the ring part of the diaphragm by pressing straight or arc patterns to suppress the split vibration, but the suppression effect of this method is limited.
Method used
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preparation example Construction
[0027] The preparation method of the vibrating film is to spray the graphene slurry onto the base material layer according to the shape of the graphene reinforced structure to obtain the reinforced base material layer; perform air pressure forming on the reinforced base material layer to form a ring on the base material layer part and top of the ball, get the diaphragm.
[0028] From the above description, it can be seen that the method for preparing the diaphragm is simple, with high yield and low cost.
[0029] Further, the graphene concentration in the graphene slurry is 1-5 wt%.
[0031] It can be seen from the above description that the solvent of the graphene slurry can be selected according to the needs, and from the perspective of environmental protection, water can be selected as the solvent.
[0032] Further, it also includes drying the reinforcing base ...
Embodiment 1
[0035] Please refer to figure 1 , Embodiment 1 of the present invention is a diaphragm, including a base material layer, the base material layer includes a circular ring portion 1 and a circular ball top 2, and the ball top 2 is arranged on the fold inside ring 1. The material of the substrate layer is at least one of PET, PEEK, PEN and LCP. The ring portion 1 is provided with a graphene reinforcement structure, and the graphene reinforcement structure includes at least two reinforcing rings 3 arranged concentrically with respect to the ring portion 1 and at least three reinforcement rings 3 along the ring portion. The reinforcing bars 4 arranged in the radial direction of the part 1, each of the reinforcing bars 4 is fixedly connected with at least two of the reinforcing rings 3 respectively. In this embodiment, the number of the reinforcing rings 3 is two, three or four, the number of the reinforcing strips 4 is three, and the three reinforcing strips 4 are evenly arranged...
Embodiment 2
[0039] Embodiment 2 of the present invention is a vibrating membrane, which is different from Embodiment 1 in that:
[0040] The base material is PET;
[0041] When preparing the diaphragm, the concentration of graphene in the graphene slurry is 2.5wt%; the temperature of the drying treatment is 100°C; when the air pressure is used, the temperature of the air press is 120°C, and the pressure is 0.6MPa.
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Abstract
The invention discloses a vibrating diaphragm and a preparation method thereof. The vibrating diaphragm comprises a substrate layer, and the substrate layer comprises a circular ring-shaped folding ring part; a graphene reinforcing structure is arranged on the folded ring part, and the graphene reinforcing structure comprises at least two reinforcing circular rings which are concentrically arranged relative to the folded ring part and at least three reinforcing strips which are arranged in the radial direction of the folded ring part, wherein each reinforcing strip is fixedly connected with atleast two reinforcing circular rings. Through the arrangement of the graphene reinforcing structure, the vibration of the vibrating diaphragm has better identity, the tone quality of a product can beimproved, a frequency response curve is smoother, distortion is reduced, and meanwhile, the light and thin characteristics of the vibrating diaphragm are also maintained; the preparation method of the vibrating diaphragm is simple, high in yield and low in cost.
Description
technical field [0001] The invention relates to the technical field of acoustic products, in particular to a diaphragm and a preparation method thereof. Background technique [0002] In headphones or stereos, the source of sound is the vibration of the diaphragm, so the vibration of the diaphragm directly determines the sound quality of the sound. Generally speaking, at low frequencies, the diaphragm can maintain a consistent piston movement, but at high frequencies, due to the limitation of material rigidity, the diaphragm will sound split vibration. When splitting the vibration, the parts of the diaphragm cannot maintain consistency, resulting in fluctuations in the frequency response curve and distortion. Therefore, how to suppress the split vibration has become an important issue to improve the sound quality of the product. [0003] Split vibration is generally divided into two types: one is axial vibration, that is, the circular diaphragm undergoes split vibration alon...
Claims
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Application Information
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