| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation input device which is capable of detecting force of an operator three-dimensionally, and improving detection accuracy.SOLUTION: There is disclosed the operation input device that receives force applied by the operator, which includes a substrate 10 having an arrangement surface on which coils 21 to 24 are disposed in a circumferential direction of a circle formed by connecting points at an equal distance from a reference point, a key 30 disposed on a side of the substrate 10 from which the force is input, and return springs 51 to 54 that elastically support the key 30. The key 30 has an opposing surface that opposes the arrangement surface and an operation surface on which the force can act. When the opposing surface approaches the arrangement surface due to the force acting on the operation surface, the inductance of at least one of the coils 21 to 24 changes. |
