Patent ID: 7902968
Filing Date: 2011-03-08
Classification: G01S,G10K

Abstract:
1. An obstacle detection device comprising: a mount member on a platform where obstacle detection is provided and having a mounting surface; and an ultrasonic sensor which is fixed on its mounting surface to a first side surface of the mount member, the ultrasonic sensor sending ultrasonic wave toward a second side surface of the mount member into an obstacle detection zone and receiving ultrasonic wave from the obstacle detection zone through the second side surface, the first side surface of the mount member being opposite to the second side surface thereof, wherein: at least one of the mounting surface of the ultrasonic sensor and the mounting surface of the mount member has a protrusion, which protrudes therefrom so that an end surface of the protrusion directly contacts an other of the mounting surfaces, the mounting surface of the mount member being at the first side surface thereof and facing the mounting surface of the ultrasonic sensor; and the end surface of the protrusion is smaller than the mounting surface of the ultrasonic sensor in at least one of shape and area thereof to facilitate directivity of ultrasonic wave into the obstacle detection zone for obstacle detection; whereby the ultrasonic wave is transmitted directly between the ultrasonic sensor and the mount member through the protrusion with said directivity.