Influence of bicycle seat height on the back lean forward angle and head injury of cyclists

doi:10.3969/j.issn.1674-8484.2022.01.009

Abstract

Abstract:

The influence of bicycle seat height on the cyclist lean forward angle of back (back angle) and cyclist head injury was investigated by using bicycle type, seat height, cyclists’ body size and car type as variables with 46 groups of physical experiments and 98 groups of digital simulation experiments. The physical experiments show that bicycle type, seat height and cyclists’ body size are significant factors in the back angle. The digital simulation experiments show that the seat height is significantly related to cyclist head injury, and the change tendency of cyclist head injury with seat height is different under different combination of car type and cyclists’ body size, with being a tolerance limit seat height of the head injury. The internal cause of the decrease in cyclist head injury under the tolerance seat height is the decrease of the relative collision velocity between the head and the vehicle. These results will provide support simulation experiments for car-bicycle collision and provide recommendations for cyclist head protection measures.

Key words: traffic engineering, cyclist safety, lean forward angle of back, head injury, nonlinear regression

CLC Number:

U491.3

ZOU Tiefang, WU Liangwei, HU Lin, NIE Bingbing, WANG Fang. Influence of bicycle seat height on the back lean forward angle and head injury of cyclists[J]. Journal of Automotive Safety and Energy, 2022, 13(1): 95-103.

Figures/Tables 15

References 24

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身材	身高 / m		体质量 / kg		误差 / %
身材	标准	志愿者	标准	志愿者	身高	体质量
小	1.480	1.530	42	45	3.38	7.14
中	1.670	1.680	59	54	0.60	8.50
大	1.775	1.780	75	70	0.28	6.60

身材	身高 / m		体质量 / kg		误差 / %
身材	标准	志愿者	标准	志愿者	身高	体质量
小	1.480	1.530	42	45	3.38	7.14
中	1.670	1.680	59	54	0.60	8.50
大	1.775	1.780	75	70	0.28	6.60

来源	车型	把手高/ cm	座高/ cm	车长/ cm	轮径/ cm
试验车	代步车	100	78~93	159	47
	山地车	98	85~102	172	66
	公路车	90	86~103	169	66
典型车	代步车	100	80~93	162	50
	山地车	97	86~96	170	66
	公路车	90	85~99	169	66

来源	车型	把手高/ cm	座高/ cm	车长/ cm	轮径/ cm
试验车	代步车	100	78~93	159	47
	山地车	98	85~102	172	66
	公路车	90	86~103	169	66
典型车	代步车	100	80~93	162	50
	山地车	97	86~96	170	66
	公路车	90	85~99	169	66

车型	身材	座高 / cm
车型	身材	低	中	高
代步车	小	78、80	85.5、86.5	93
代步车	中、大	78	85.5	93
山地车	中、大	85	93.5	102
公路车	中、大	86	94.5	103