The Application of Systematical Function Analysis in Shoulder-Type Electric Lawn-Mower Design
The progress of science and technology has affected human living customs and working modes. This change also enhances and assists the human to efficiently solve problems encountered around our environment. A shoulder-type electric lawn-mower is a personal tool that can be used for closely-cut environmental lawn or garden cleaning. The shoulder-type electric lawn-mower has replaced man cutting activity and greatly reduces the mowing time. However, when people operating the shoulder-type electric lawn-mower for a period of time, shock and vibration will cause the user to feel uncomfortable and even get hurt. The objective of this research is to apply systematic function analysis and ergonomic operation model to the improvement of the shoulder-type electric lawn-mower. In the systematic function analysis, the overall design and structure of a shoulder-type electric lawn-mower is explored and help identify the user problems and demands, such as weight, shock and vibration, length and prevention. An integrated design norm is determined and the concepts of design alternatives are proposed. The research used the computer graphical software to build 3D design alternatives and evaluate the feasibility of operation. It is expected that through the considerations of user operational custom and ergonomics, form of functions, adjustability, storage, size, weight, vibration coefficient, safety, specific uses, materials and regulation, an optimum shoulder-type electric lawn-mower can be designed.
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