Sound-proof device and vehicle provided with sound-proof device

A technology for a sound insulation device and a car body, applied in the field of vehicles, can solve the problems affecting the safe driving of the vehicle, energy loss, easy aging, etc., and achieve the effect of reducing the possibility of interference, prolonging the service life, and ensuring safe driving.

Active Publication Date: 2015-08-19
BEIJING BORGWARD AUTOMOBILE CO LTD
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the needs of technology, there are often process through holes on the vehicle body sheet metal near the noise source. The noise from the above three sources is likely to be transmitted into the cab through the process through holes, thereby affecting the driver's hearing. It causes certain interference and affects the safe driving of the vehicle, so it is more important to improve the noise reduction performance of the vehicle
In order to improve the noise reduction performance of the whole vehicle, the existing technology mainly reduces noise by installing rubber plugging parts in the process through holes. The noise is transmitted from the noise source to the outside of the body sheet metal through the first medium—air, and then Through the second medium—rubber sealing parts, it is transmitted from the outer side of the body sheet metal to the inner side of the body sheet metal. Since the noise propagates in two different media successively, the energy carried by the noise will be lost to a certain extent, so the rubber sealing The parts can play a certain role in sound insulation and noise reduction, but there are certain defects in this noise reduction method: because the rubber sealing parts installed in the process through holes are exposed to the external environment for a long time, it is particularly easy to age, and its The sound insulation performance will gradually decrease with the deepening of its aging degree, and a good sound insulation and noise reduction effect cannot be guaranteed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sound-proof device and vehicle provided with sound-proof device
  • Sound-proof device and vehicle provided with sound-proof device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The following will refer to Attached picture Exemplary embodiments of the present disclosure are described in more detail. Although In the attached picture Exemplary embodiments of the present disclosure are shown, however, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] Examples of sound insulation devices:

[0021] see figure 1 , figure 2 , in the picture A preferred structure of the sound insulation device provided by the embodiment of the present invention is shown. Such as figure 1 , 2, this embodiment includes: a blocking piece 1 and a protective cover 2, wherein the blocking piece 1 is used to connect with the through hole on the body sheet metal 3, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a sound-proof device and a vehicle. The sound-proof device comprises a blocking piece and a protection cover, wherein the blocking piece is connected with a through hole in a metal plate of a vehicle body; the protection cover at least covers the outside of parts of the blocking piece. The protection cover at least covers the outside of parts of the blocking piece, so that the phenomenon that the whole blocking piece is exposed in the air is avoided, the blocking piece is protected by the protection cover to a certain degree, and the service life of the blocking piece is prolonged. In addition, when noise spreads from a noise source to the protection cover, the protection cover can have certain effects of insulating sound and reducing noise, and when the noise spreads to the blocking piece, the blocking piece can have an effect of secondary noise reduction, so that the noise is further reduced, the possibility that the noise interferes with a driver is decreased, and the safe running of the vehicle is guaranteed accordingly.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a sound insulation device and a vehicle provided with the sound insulation device. Background technique [0002] For ordinary passenger cars, the noise in the cockpit mainly comes from the following three sources: tire suspension noise, road excitation noise and powertrain noise. Due to the needs of technology, there are often process through holes on the vehicle body sheet metal near the noise source. The noise from the above three sources is likely to be transmitted into the cab through the process through holes, thereby affecting the driver's hearing. It causes certain interference and affects the safe driving of the vehicle, so it is more important to improve the noise reduction performance of the vehicle. In order to improve the noise reduction performance of the whole vehicle, the existing technology mainly reduces noise by installing rubber plugging parts in t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B60R13/08
CPCB60R13/08
Inventor 丁冬
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products