Patent ID: 7614305
Filing Date: 2009-11-10
Classification: B60Q,G01S,G10K

Abstract:
1. An ultrasonic sensor comprising: at least one ultrasonic detector configured to detect an ultrasonic wave reflected from a target to be detected; at least one acoustic matching member having a mounting surface to which the ultrasonic detector is mounted and a receiving surface opposite to the mounting surface and exposed to space where the target exists to receive the reflected ultrasonic wave, the acoustic matching member being configured to transfer the reflected ultrasonic wave received at the receiving surface to the ultrasonic detector mounted to the mounting surface; a housing that accommodates the ultrasonic detector and the acoustic matching member and has an opening through which the receiving surface of the acoustic matching member is exposed to the space, the housing being mountable to an object that uses the ultrasonic sensor; a vibration isolator located between the acoustic matching member and a first portion of an inner side wall of the housing to fix the acoustic matching member to the housing, the first portion of the inner side wall being located near the opening, the vibration isolator being configured to damp a vibration transferred from the object to the acoustic matching member; a protection cover that covers a surface of the ultrasonic detector to protect the ultrasonic detector from a usage environment factor; and a cushion member configured to protect the ultrasonic detector from external force, wherein the cushion member includes at least one of a first cushion member and a second cushion member, wherein the first cushion member is located between the ultrasonic detector and an inner bottom wall of the housing, and wherein the second cushion member is located between the ultrasonic detector and a second portion of the inner side wall of the housing.