Load detector and electronic unit using the same

The purpose of the invention is to provide a load detector and an electronic unit using the same, which is capable of realizing good operability, miniaturization and good sensor sensitivity. A load detector and an electronic unit using load detectors include a load sensor having a projective pressure receiving part, a case in which the load sensor is placed with the pressure receiving part facing toward the upper surface of the case, and an elastic body placed on the same side as the upper surface of the load sensor, the elastic body configured to receive a load and press the load sensor in its height direction.