By 16aaygh. Futon. At Friday, August 10th 2018, 03:59:10 AM.
With more traditional furniture, the inner frame is covered and very difficult to access. The makes any type of home repairs extremely irritating at best. Futons are very open though and everything is easily accessible. Often, repairs to the frame can be made by novices and parts replaced at low cost.
Bent hinges also added another issue that would happen from use over time. While not as common as the other problems this issue still led to the failure of many black metal frames. The hinges were attached to the arms of the futon frames with two bolts and two nuts. While this design was OK the hinges themselves would fail when too much weight was applied to one side or the other. These would also bend out rendering them useless in the operation of the futon.
This flexibility in being able to change from a sofa to a bed in no time is especially slick for those who do not want to invest in an extra bed for occasional guests or for those who simply do not have room for extra furniture. They come in up to queen sizes and work just fine for daily use as a bed too.