US 12,436,026 B2
Ultrasonic sensor
Tomoaki Matsushita, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Sep. 8, 2023, as Appl. No. 18/243,709.
Application 18/243,709 is a continuation of application No. PCT/JP2022/001606, filed on Jan. 18, 2022.
Claims priority of application No. 2021-045099 (JP), filed on Mar. 18, 2021.
Prior Publication US 2023/0417594 A1, Dec. 28, 2023
Int. Cl. G01H 11/08 (2006.01); G01S 7/521 (2006.01); H04R 17/00 (2006.01)
CPC G01H 11/08 (2013.01) [G01S 7/521 (2013.01); H04R 17/00 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An ultrasonic sensor comprising:
a case including a cylindrical side wall and a bottom plate in one end portion of the side wall; and
a piezoelectric element on the bottom plate inside the case; wherein
the side wall includes a pair of thick wall portions facing each other and a pair of thin wall portions thinner than the thick wall portions facing each other;
an inner peripheral edge of another end portion of the side wall includes a chamfered portion; and
the chamfered portion of one of the pair of thin wall portions includes a recessed portion.