Circuit board positioning structure of control cabin of bone conduction earphone

The utility model relates to the technical field of bone conduction earphone assembly, in particular to a circuit board positioning structure of a control cabin of a bone conduction earphone, which comprises a control cabin, a circuit board arranged in the control cabin, keys arranged on the circuit board, and at least two limiting structures arranged at the joint of the control cabin and the circuit board. According to the utility model, the circuit board is positioned and limited in the control cabin along the transverse and longitudinal directions of the circuit board through the limiting structure, so that the circuit board is prevented from loosening, the hand feeling of pressing the circuit board key by a user is improved, and the condition that the key needs to be pressed vigorously when the circuit board key is used due to the loosening of the circuit board is avoided; meanwhile, the control bin and the circuit board of the bone conduction earphone can be conveniently assembled, and the assembling eff