Physical ergonomics analysis for power hand drill

Power hand drill is a representative hand tool product. All human factors considerations for hand tools design can be applied into the design of power hand drill. The physical ergonomics relates closely to severe healthy and safety problems caused by using improper designed hand tools. This paper puts forward the principles for hand tools design, and analyzes thoroughly the physical ergonomics from four aspects that are the anthropometry, biomechanics, functional anatomy and physiology. The overall goal is to optimize the relationship between users and the hand tools, to design hand tools safer to use and to design hand tools to improve user´s using performance