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Cup material of passive noise reduction earmuffs

A technology of passive noise reduction earmuffs and cups, which is applied in earphones to reduce environmental noise, handset/earphone accessories, earphone manufacturing/assembly, etc. It can solve the problems of low sound insulation performance in the middle and low frequency bands, and achieve improved sound insulation performance, Simple, reliable, and low-cost effects

Active Publication Date: 2020-09-22
苏州力耘智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the low sound insulation performance of passive noise reduction earmuffs in the middle and low frequency bands, the present invention provides a cup material for passive noise reduction earmuffs. The cup material is modified, which can effectively improve the sound insulation performance of the passive noise reduction earmuffs in the middle and low frequency bands without affecting the sound insulation of the high frequency band.

Method used

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  • Cup material of passive noise reduction earmuffs
  • Cup material of passive noise reduction earmuffs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A cup material for passive noise reduction earmuffs, based on the total mass of the cup material as 100%, the composition of the cup material and the mass percentage of each component are as follows: ABS 79%, SIR (damping coefficients greater than 0.2) 17% and PC 4%.

Embodiment 2

[0016] A cup material for passive noise reduction earmuffs, based on the total mass of the cup material as 100%, the composition of the cup material and the mass percentage of each component are as follows: ABS 75%, SIR (damping coefficients greater than 0.2) 18% and PC 7%.

[0017] The cup materials and ABS materials in Examples 1 to 2 were used to prepare three cups with the same size and structure, and the three cups were assembled into three single-cup earmuffs with the same structure, that is, except for the different cup materials, other parameters All are the same, the size of the earmuffs conforms to the M type of the standard GB / T 2428 adult head and face size, and the clamping force of the earmuffs is 9.5N. Three earmuffs were tested for sound insulation frequency performance under the same conditions. For details, see the test results. figure 1 and figure 2 . Among them, the instruments involved in the test include: the sound level meter is Denmark BK22032, the ...

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Abstract

The invention relates to a cup material of passive noise reduction earmuffs, and belongs to the technical field of passive noise reduction earmuffs. According to the invention, the cup material is modified to obtain the material with high sound loss factor, the low-frequency sound insulation performance of the passive noise reduction earmuff can be effectively improved under the condition of not influencing the high-frequency sound insulation, and the scheme is simple and easy to implement, low in cost and high in reliability.

Description

technical field [0001] The invention relates to a cup material for passive noise reduction earmuffs, belonging to the technical field of passive noise reduction earmuffs. Background technique [0002] Acrylonitrile-butadiene-styrene copolymer (Acrylonitrile Butadiene Styrene, referred to as ABS) has excellent impact resistance, sound insulation, scratch resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size and good surface gloss, easy to paint and color, and can also carry out secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding. The cup materials of the existing passive noise-cancelling earmuffs all use ABS. When the earmuff structure is fixed, the sound insulation characteristics of using this material to make passive noise reduction earmuff cups are that the sound insulation performance increases with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R31/00
CPCH04R1/1083H04R1/1058H04R31/00
Inventor 蒙上阳李中付刘飞蒙嵩蔚
Owner 苏州力耘智能科技有限公司
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