US Patent 10190724 Supporting frame

A supporting frame is disclosed, which comprises a base, a shaft, a cantilever arm, an elastic body, a mounting unit and at least one cam. The shaft is disposed on the base. The cantilever arm has a first end and a second end. The cam is formed on the first end. The first end of the cantilever arm is pivoted on the shaft, and the elastic body is sleeved on the shaft for providing an elastic force to the cam. The mounting unit holds the display device. The cantilever arm rotates toward the base around a pivot point where the shaft is pivoted on the cantilever arm to cause the cam deforming the elastic body so that elastic force of the elastic body is increased.