A　5R　pseudo-rigid-body　model　(PRBM)　is　proposed　for　inflection　beams　in　compliant　mechanisms.　This　new　model　consists　of　six　rigid　links　connected　by　five　joints.　Four　joints　with　torsional　spring　are　added　at　the　joints　to　simulate　the　deflection　and　a　free　hinge　without　spring　is　used　to　present　the　inflection　point　of　the　flexural　beam.　An　objective　function　is　established　according　to　relative　angular　displacement　between　the　two　rigid　links　jointed　by　the　free　hinge　for　finding　the　optimal　characteristic　parameters　of　the　5R　PRBM.　The　spring　stiffness　coefficients　of　the　5R　PRBM　are　obtained　using　a　linear　regression　technique.　Numerical　examples　are　presented　and　the　results　are　shown　by　comparing　with　elliptical　integral　solutions.　This　new　pseudo-rigid-body　model　behaves　as　load　independent　and　can　be　used　to　predict　both　the　tip　locus　and　inflection　position　of　flexural　beams.　(C)　2017　Elsevier　Ltd.　All　rights　reserved.