Gravity center measuring device and measuring method for dummy for safety belt testing
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A technology of measuring device and measuring method, which is applied in the direction of measuring device, vehicle testing, machine/structural component testing, etc., to achieve the effects of easy implementation, low manufacturing cost and simple structure
Active Publication Date: 2019-06-18
湖南赛孚汽车科技股份有限公司
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[0005] Although the regulations have made requirements for the center of gravity of the dummy used in the seat belt test, and it was also found in the test that the center of gravity of the dummy has an impact on the test results of the seat belt, there is currently no suitable method and device in China to measure the center of gravity of the dummy and judge Is it within the scope required by the regulations
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Embodiment 1
[0050] The invention provides a device for measuring the center of gravity of a dummy for a safety belt test, the structure of which is as follows: figure 1 , figure 2 , Figure 4 As shown, it includes: a seat 1, a bearing assembly 2, a bracket 3, an angle adjustment ruler 4, a force sensor 5, a foot support 6 and a dummy 7 under test.
[0051]The seat 1 is connected to the bracket 3 through the bearing assembly 2, and the seat 1 can rotate around the axis of the bearing assembly 2 within a certain range to change the sitting posture of the dummy 7 to obtain multiple sets of measurement data.
[0052] The function and structure of each component in the dummy center-of-gravity measuring device for the above-mentioned safety belt test are as follows:
[0053] Seat 1:
[0054] Seat 1 is designed according to the sitting posture requirements of the dummy in the safety belt test in Appendix D of GB14166-2013. It includes seat surface 1.1, backrest 1.2, chair legs, chair pedals ...
Embodiment 2
[0100] Embodiment 2 of the present invention provides a method for measuring the center of gravity of a dummy for seat belt testing, which utilizes figure 1 , figure 2 , Figure 4 A seat belt test shown is realized with a dummy center of gravity measuring device. The specific implementation steps of the dummy center of gravity measurement method for the safety belt test are as follows:
[0101] In step S101, the readings of the four force sensors are set to zero.
[0102] Adjust the foot support 6 so that the upper surfaces of the two cross supports 3.2 of the support 3 are horizontal and coplanar, and the readings of the four force sensors are reset to zero.
[0103] Step S102, placing the dummy 7 under test.
[0104] Place the dummy 7 under test on the dummy seat 1 according to the sitting posture required by the regulations GB14166-2013, so that the back of the dummy fits the backrest 1.2, the buttocks fits the seat surface 1.1, and the feet rest on the seat pad 1.3 ....
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Abstract
The invention provides a gravity center measuring device and measuring method for a dummy for safety belt testing. According to the gravity center measuring device and measuring method for the dummy for safety belt testing, an included angle is formed between a seat surface (1.1) and a horizontal direction; a backrest (1.2) is perpendicular to the seat surface; the buttock of a dummy under test isarranged on the seat surface (1.1); the back of the dummy is attached to the backrest (1.2); seat pedals are arranged under seat legs; the feet of the dummy under test (7) are mounted on the seat pedals; the center of gravity of a seat (1) is located at a standard dummy theoretical gravity center position required by regulations; the seat (1) is connected with a bracket (3) through two sets of bearing assemblies (2); the seat (1) can rotate around the axes of the bearing assemblies (2) within a certain range; the axes of two sets of bearing blocks (2.1) are collinear and pass through the center of gravity of the seat (1); foot supports (6) are disposed at four corner positions below the bracket (3); and each foot support (6) is connected with a force sensor (5). The measuring device of the invention is simple in structure and can reduce variables in measurement during a measurement experiment, and obtain more convincing results.
Description
technical field [0001] The invention relates to the field of automobile safety detection, in particular to a center-of-gravity measuring device and a measuring method for a dummy used in a safety belt test. Background technique [0002] In the field of automobile safety inspection, the dummy for seat belt test is one of the most commonly used dummies, among which the most common is TNO-10 dummy, which is mainly used for dynamic test of seat belt and research and development test in automobile crash simulation experiment. The physical mass and dimensions are designed according to the distribution of 50% of the human body. The dummy is designed with the forearm removed and only one lower leg for use in crash tests. [0003] Appendix D of the standard GB14166-2013 stipulates the spatial position of the center of gravity of the seat belt test dummy when sitting. In addition, in the process of continuous revision and improvement of the standard, the height of the center of gravi...
Claims
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