| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasonic sensor which can improve aesthetic appearance in a state that it is attached to a bumper. <P>SOLUTION: An ultrasonic sensor comprises: a body block 3 which holds at least one of transmitting means for transmitting ultrasonic waves and receiving means for receiving ultrasonic waves; and a mounting base which is connected to the body block 3 and is fixed to the internal surface of a bumper 1. The body block 3 includes a cylindrical insertion part 41 which is inserted to a circular exposure hole 11 provided in the bumper 1 with its axis direction oriented to the direction of thickness of the bumper 1. The external peripheral surface of the insertion part 41 is provided with four contacting protrusions 46 having a common dimensional shape for being in contact with the internal peripheral surface of the exposure hole 11. Because the center of the insertion part 41 is more easily matched with the center of the exposure hole 11, seen from the external side of the bumper 1, than in a case that there are no contacting protrusions 46, the appearance can be improved. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
