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Method for testing dynamic performance of automobile safety belt

A technology of dynamic performance and test method, applied in vehicle testing, vehicle impact testing, impact testing and other directions, can solve the problems of measurement and evaluation of unbelted webbing, and achieve the effect of strong repeatability, accurate results and high precision

Active Publication Date: 2020-05-08
CHONGQING CHANGAN AUTOMOBILE CO LTD
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AI Technical Summary

Problems solved by technology

[0003] Chinese patent document CN201707041U discloses a test device for seat belt pre-tightening and limiting force, which only measures the pre-tightening and limiting force of the seat belt in the pre-tightening and force-limiting stages, and does not test the seat belt webbing. Force measurement and evaluation

Method used

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  • Method for testing dynamic performance of automobile safety belt
  • Method for testing dynamic performance of automobile safety belt
  • Method for testing dynamic performance of automobile safety belt

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, the present invention will be further described;

[0035] Such as figure 1 and figure 2 As shown, the test method for the dynamic performance of seat belts includes the following steps:

[0036] Step 1: Obtain the waveform of the seat belt dynamic performance test

[0037] Weigh the rigid seat 3, simulated B-pillar 4, Buckle mounting plate 8, foot pedal 9, wedge-shaped mounting plate 5, rectangular mounting plate 6, etc., and input the mass of each tooling and dummy into the trolley system 1 In the control software, iterate the seat belt dynamic performance test waveform according to the known waveform (that is, the target waveform) until the two waveforms basically coincide and the speed change of the test waveform is within the range of 55±1Kmph.

[0038] Among them, the target waveform is the standard waveform of the seat belt dynamic test produced by using the acceleration waveforms simulated by the actual frontal ...

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Abstract

The invention provides a method for testing the dynamic performance of an automobile safety belt. The method comprises the following steps: simulating a real vehicle head-on collision test working condition; measuring force borne by all braids of a safety belt in a dynamic test through a safety belt force sensor, and evaluating the pre-tightening function and the force limiting function of the safety belt by calculating the change of the pre-tightening amount and the pull-out amount of the safety belt in the dynamic test along with time through image analysis software. The method has the advantages of low test cost, strong test operability, high precision, good repeatability and the like.

Description

technical field [0001] The invention is aimed at the testing method of the automobile components, and in particular relates to the testing method of the dynamic performance of the safety belt of the automobile. Background technique [0002] As people pay more attention to the safety performance of automobiles, it has become standard to install pre-tension force-limiting safety belts on vehicles, and the pre-tension performance and force-limiting performance of automobile safety belts are particularly important. However, the current domestic and foreign laws and regulations on the dynamic test of vehicle seat belts include: when the acceleration or deceleration device applies a dynamic load (national standard acceleration waveform) to the pulley, only the structural strength of the seat belt and the maximum forward movement of the dummy are evaluated. The amount, the speed curve and the speed change of the tackle. There is no evaluation on the pre-tightening performance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M7/08G01M17/007
CPCG01M13/00G01M7/08G01M17/0078
Inventor 刘勇尹长青李佳耀王韦刚彭令旦
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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