Applied research using the NIOSH Lifting Equation to optimize the design of shopping trolley for the elderly

Abstract In an ageing society, products designed for the elderly should prioritize ease of use and reduced physical fatigue. For the elderly shopping scene, combined with the ergonomic principles and Jack Human Simulation software analysis, a method of mapping NIOSH lifting equation to the product optimization design is proposed to optimize the dimensions and styling design of the elderly shopping trolley as a carrier, to optimize the length, dimensions of the elderly shopping trolley, including the distance from the ground. Dividing the handle height of the elderly shopping trolley into 795mm, 908mm and 1021mm to effectively reduce pressure on the lower limbs. Additionally, setting the basket size to 380mm×340mm×480mm and the height above the ground to 470mm can significantly reduce the risk of lower back pain for the elderly and improve their shopping experience. Optimized design of shopping trolleys for the elderly can effectively reduce the physical stress of the elderly and provide experience and methods for human-machine optimization of other similar products.