Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sound insulation performance test window and test method for variable-size vehicle sound package

A technology of acoustic bag and test window, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, instruments, and analysis materials, etc. It can solve the problem of inability to complete the sound insulation test of the vehicle sound bag, the difficulty of ensuring the sealing and sound insulation, and the time-consuming and other problems, to achieve the effect of simple structure, ensuring sound insulation performance, and reducing the weight of the window

Pending Publication Date: 2019-07-12
CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD +1
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the sound insulation windows used in the sound insulation performance test of acoustic packages are of fixed size, which has the problem of poor adaptability. Since the acoustic package is widely used in various system parts of vehicles, the size and area of ​​the samples are not standard, and the difference is large (from several 10 square centimeters to several square meters), if the area of ​​the sound insulation window is too small, it is impossible to complete the sound insulation test of the vehicle firewall, floor, door, etc.; if the area of ​​the sound insulation window is large, small-sized samples need to be made for comparison Complicated tooling is labor-intensive and at the same time, it is difficult to guarantee the sealing and sound insulation

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 insulation performance test window and test method for variable-size vehicle sound package
  • Sound insulation performance test window and test method for variable-size vehicle sound package
  • Sound insulation performance test window and test method for variable-size vehicle sound package

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] This test window and test method embodiment 1 are as follows:

[0070] Sound insulation performance test of a car carpet raw material:

[0071] 1. The raw material size of the test carpet is 650mmX650mm;

[0072] The size of the sample is smaller than the size of the small window 670mmX670mm, and the small window is used for testing;

[0073] 2. Open the quick clamp 8 between the middle window panel 3 and the small window panel 4;

[0074] Take off the small window plate 4 through the stainless steel handle 9 on the side of the semi-anechoic chamber;

[0075] Install the prepared carpet material tooling in the vacated space;

[0076] 3. Use butyl rubber and two-component sound-absorbing cotton to seal the joints of the windows;

[0077] 4. Use an ultrasonic leakage instrument to check the sealing status of the overall sound insulation window area to ensure no leakage;

[0078] 5. Use the sound intensity sensor to test the sound insulation performance, the test resu...

Embodiment 2

[0079] The test window and test method embodiment 2 are as follows:

[0080] Sound insulation performance test of the engine compartment firewall of an SUV model:

[0081] 1. The size of the test engine compartment firewall is 1700mmX950mm;

[0082] The size of the sample is larger than the middle window 1650mmX1350mm, and the large window is used for testing;

[0083] 2. Use the steel chain to connect the large window panel 2 with the pulley mechanism on the wall through the eyebolt 7, and lift and remove the entire large window panel 2;

[0084] Install the prepared engine compartment firewall tooling on the vacated space;

[0085] 3. Use butyl rubber and two-component sound-absorbing cotton to seal the joints of the windows;

[0086] 4. Use an ultrasonic leakage instrument to check the sealing status of the overall sound insulation window area to ensure no leakage;

[0087] 5. Use the sound intensity sensor to test the sound insulation performance, the test results are ...

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 insulation performance test window and test method for a variable-size vehicle sound package. The test window comprises an outer frame; the outer frame is fixed on a wall body; a large window board covering the interior of the outer frame is arranged in the outer frame; a middle window board notch is formed in the large window board, and a middle window board covering the middle window board notch is arranged in the middle window board notch; and a small window board notch is formed in the middle window board, and a small window board covering the small window board notch is arranged in the small window board notch. The sound insulation performance test window and test method for the variable-size vehicle sound package not only can guarantee leakproofness andsound insulation performance of a window body self but also can quickly and accurately test sound insulation performance of vehicle sound package samples in different sizes and types.

Description

technical field [0001] The invention belongs to the technical field of vibration and noise control, and in particular relates to a variable-sized vehicle acoustic package sound insulation performance test window and a test method. Background technique [0002] When consumers experience the quality of cars, NVH (noise, vibration and harshness) performance has a significant impact on customers' feelings, and the quality of vehicle acoustic packaging is an important factor in determining the level of acoustic characteristics in the car. Through acoustic packaging, not only the noise inside the car can be reduced, but also the sound quality inside the car can be adjusted to meet the needs of customers. [0003] The vehicle acoustic package is generally composed of cotton felt, sponge, glass fiber, various artificial fibers, non-woven fabrics, quality layers and seals and other materials. For passenger cars, acoustic packaging mainly includes sound-absorbing parts in the engine ...

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): G01N29/11
CPCG01N29/11G01N2291/023G01N2291/015
Inventor 李灿邓江华顾灿松王海洋李洪亮夏洪兵陈昭
Owner CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com