A Proposed Limit for Printed-Circuit Board Insertion Forces.
HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD
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A study was made to recommend a maximum force level that an individual inserting printed circuit boards PCBs into equipment by pushing with his thumbs would not have to exceed to fully seat the PCB. Twenty-four subjects pushed against a simulated circuit card with two handle orientations in each of two directions. Each subject exerted his maximum steady force for three to five seconds, and then lunged to achieve the greatest maximum force possible. A recommended limit of 25 pounds was calculated from the results. This value is achievable by 95.8 percent of the population using a steady push. By lunging, more than 99 percent of the population can exert a 25-pound force. Author
- Electrical and Electronic Equipment
- Human Factors Engineering and Man Machine Systems