Patent ID: 8411532

Claim:
A distance sensor for a vehicle which is to be inserted and mounted in a mount hole of a bumper of a vehicle to measure a distance between the vehicle and an obstacle, the distance sensor comprising: a sensor body which transmits a signal outside the vehicle and receives a signal being reflected and returned from the obstacle; a case body with a sensor holding portion which holds the sensor body; a bezel including a cylindrical portion engaging the sensor holding portion of the case body and a flange formed on an end of the cylindrical portion in an axial direction thereof, the flange having a diameter greater than an inner diameter of the mount hole of the bumper; and a retainer which includes a ring-shaped base engaging the bezel, a plurality of arms extending from an end surface of the base in an axial direction along an axis of the base, and claws protruding from top portions of the arms in a radius direction of the arms so that an outer diameter of a circle passing through tops of the claws is greater than an inner diameter of the mount hole of the bumper, the claws shrinking when inserted into the mount hole of the bumper and returning elastically to original positions of the claws when the claws have passed the mount hole, thereby engaging an inner edge on an exit side of the mount hole.