期刊
APPLIED ERGONOMICS
卷 99, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apergo.2021.103636
关键词
Power tools; Handle design; Cordless screwdriver; Finger force; Perceived usability
This study found correlations between finger forces and maximum comfort with handle circumferences, introducing contact length as a parameter to better determine optimal handle circumference and providing important references for user-centered design.
In this study the geometric parameter of the contact length is introduced, which intends to combine force exertion and perceived handle comfort in an anthropometric length in order to determine an optimal handle circumference. To prove suitability of the approach, 31 subjects were determined and correlations to handle circumferences with the highest finger forces and highest rated comfort were investigated. For all fingers, medium correlations were found among the contact lengths and the circumferences determined with maximum force (p < 0.001, r(index) = 0.348, r(middle) = 0.419, r(ring) = 0.374 and r(little) = 0.337) with high accordance of median values. Weak to moderate correlations were found between circumferences with maximum comfort and the contact lengths (p < 0.001, r(index) = 0.150, r(middle) = 0.265, r(ring) = 0.174). Using finger-specific proportionality factors, the contact lengths can be determined directly from the hand lengths, which enables great benefits for user-centered design.
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