US Patent 10060574 Supporting device

A supporting device includes a housing, a support board, a linkage trestle and a plurality of elastic bodies. The support board pivots on the housing. The linkage trestle includes a pivot end and a sliding end, the pivot end is pivotally connected to the support board, and the sliding end abuts the housing. The plurality of elastic bodies are disposed in the housing, and the elastic bodies form a slide channel in the housing, wherein the sliding end is disposed in the slide channel, the sliding end abuts the elastic bodies, and the elastic bodies change the width of the slide channel with the movement of the sliding end such that the elastic bodies push against the sliding end.