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Automobile tail fin capable of reducing noise pollution

A technology of noise pollution and tail fins, which is applied to the body, vehicle parts, streamlined body, etc., can solve the problem of large wind noise of the tail body and achieve the effect of reducing noise pollution

Inactive Publication Date: 2016-06-15
CHENGDU LIXIN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a car tail that reduces noise pollution, to solve the problem of relatively large wind noise of the tail body in the prior art, and to achieve the purpose of reducing the wind noise of the tail body when the car is running at high speed
Aiming at the problem that the existing car tail will generate relatively large noise during high-speed driving, the present invention proposes a car tail that reduces noise pollution. The car tail is made of resonant sound-absorbing materials, and at the same time, a A layer of glass wool, using the resonance of the resonant sound-absorbing material and the porous sound-absorbing effect of glass wool, to reduce the noise pollution of the rear wing of the car during high-speed driving

Method used

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  • Automobile tail fin capable of reducing noise pollution
  • Automobile tail fin capable of reducing noise pollution

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 and figure 2 The shown car tail for reducing noise pollution includes a tail body 1 fixedly installed at the rear of the car, the tail body 1 is made of a resonant sound-absorbing material, and the surface of the tail body 1 is also covered with a layer of glass wool 2. The resonant sound-absorbing material is an aluminum fiber sound-absorbing board. The present invention makes the car tail by using the resonant sound-absorbing material, and at the same time coats a layer of glass wool 2 on the surface of the tail body 1, and utilizes the resonance of the resonant sound-absorbing material and the porous sound-absorbing effect of the glass wool 2 to reduce the speed of the car tail when driving at high speed. Noise pollution in the process. Aluminum fiber sound-absorbing panels are existing sound-absorbing materials, all of which have the characteristics of high strength, good sound-absorbing effect, strong environmental adaptability, etc., and have a...

Embodiment 2

[0022] Such as figure 1 and figure 2 A kind of car rear wing that reduces noise pollution shown, on the basis of embodiment 1, described resonant sound-absorbing material is the sheet metal that has circular perforation 3; The aperture of described circular perforation 3 is 1~3mm and is randomly distributed. The metal sheet material has high strength, high temperature resistance, long service life, and is not easy to be damaged. It is preferably galvanized sheet, aluminum sheet or stainless steel sheet. The circular perforation 3 on it provides a flow channel for the air. When the natural frequency is the same, the resonance phenomenon will occur. At this time, the amplitude of the metal sheet reaches the maximum, the air reciprocating speed in the perforation is the maximum, the friction loss is the maximum, and the absorbed sound energy also reaches the maximum. The large hole diameter of the circular perforation 3 will reduce the adhesion to the bottom surface provided b...

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Abstract

The invention discloses an automobile tail fin capable of reducing noise pollution. The automobile tail fin comprises a tail fin body fixedly installed at the tail of an automobile. The tail fin body is made from a resonant sound-absorbing material. The surface of the tail fin body is further coated with a glass wool layer. The automobile tail fin capable of reducing noise pollution is provided for solving the problem that tail fin bodies produce loud wind noise in the prior art, and the purpose of reducing wind noise of the tail fin body when the automobile runs at a high speed is achieved.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to an automobile rear wing for reducing noise pollution. Background technique [0002] The tail fin of a car refers to the duck-tail-like projection on the rear end of the trunk lid of the car, which is a part of the aerodynamic accessories of the car. The main function is to reduce the lift at the rear of the vehicle. When the car is running at high speed, according to the principle of aerodynamics, it will encounter air resistance during driving, and the air momentum in three directions of longitudinal, lateral and vertical rise will be generated around the center of gravity of the car at the same time, of which the longitudinal direction is the air resistance. [0003] In order to effectively reduce and overcome the influence of air resistance when the car is running at high speed, people design and use the tail fin of the car. Part of the lifting force can effectively control the car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D35/00
CPCB62D35/007Y02T10/82
Inventor 赖金元
Owner CHENGDU LIXIN SCI & TECH