A Proposed Limit for Printed-Circuit Board Insertion Forces.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0723049
Entities
People
- R. Bradley Randall
Organizations
- Human Engineering Laboratory