A load detector includes a housing having a height direction, and a load sensor provided within the housing. The load detector further includes a base platform, an elastic beam and an elastic member, the base being floatingly supported on the housing by the elastic beam, and the elastic member being provided on the base platform for receiving a load force. With the load force is applied to the elastic member, the elastic beam and the elastic member are simultaneously elastically deformed in the height direction, and the load force is transmitted to the load sensor via the base platform. The base platform is floatingly supported on the housing by the elastic beam, so that a high sensitivity of the load sensor may be enabled and the load sensor may be prevented from damage caused by excessive load.