US Patent 10464457 Vehicle door armrest substrate having integral high retention fastener

A vehicle door includes an inner door liner having a substrate receptacle. An armrest substrate has a plurality of posts extending through the inner door liner at the substrate receptacle. The substrate receptacle has a plurality of one-way apertures that receive the plurality of posts. Integral retaining features positioned at an end of each post maintains engagement of each post within each respective one-way aperture.