Scissor type lifting device, for beds of recreational vehicles

A scissor-like lifting device for beds of recreational vehicles comprises at least one pair of gear members (22,23) that form a gear assembly for transmitting motion from a first rod (12) of the scissor linkage to at least one lever driven by linear motion assisting means (26,27) that may be linear actuators, gas springs, or other type of elastic elements. The presence of the gear assembly (22,23) and the lever elements (24,25) allows positioning such linear drive assisting means (26,27) in a much more rational and effective way.