公开(公告)号：US20240307919A1

公开(公告)日：2024-09-19

申请号：US18576290

申请日：2022-08-09

Applicant: NITERRA CO., LTD.

Inventor： Toshihito SONOBE ,  Asuka TSUJII ,  Ryo SUZUKI ,  Yuichiro HANAWA ,  Shinsuke ITOH ,  Takashi KASASHIMA

IPC: B06B1/06

CPC classification number: B06B1/0648

Abstract: An ultrasonic transducer (1) includes a base portion (14), a piezoelectric element (11), a vibration plate (10), and a resonator (12). The resonator (12) is joined to a first surface (21) of the vibration plate (10). A surface, of the piezoelectric element (11), on a side opposite to a side on which the piezoelectric element is joined to the base portion (14), is joined to a second surface (22) of the vibration plate (10). A through-hole (30) is formed in the piezoelectric element (11) so as to penetrate therethrough in a thickness direction of the vibration plate (10). In a planar direction orthogonal to the thickness direction of the vibration plate (10), a joined portion (40) between the vibration plate (10) and the resonator (12) is located inward of a node (20) of vibration of the vibration plate (10), and the through-hole (30) is located inward of the node (20).

公开(公告)号：US20240310497A1

公开(公告)日：2024-09-19

申请号：US18271553

申请日：2022-08-09

Applicant: Niterra Co., Ltd.

Inventor： Yuichiro HANAWA ,  Asuka TSUJII ,  Ryo SUZUKI ,  Shinsuke ITOH ,  Takashi KASASHIMA ,  Toshihito SONOBE ,  Hirotoshi YOSHIZAKI

IPC: G01S7/521

CPC classification number: G01S7/521

Abstract: An ultrasonic transducer (1) including: a plurality of vibrators (11); and a connection portion (30) connecting the vibrators (11) to each other. Each of the vibrators (11) has a piezoelectric element (21) and a vibration plate (20) joined to the piezoelectric element (21). The connection portion (30) connects the vibration plates (20) to each other. A width (W2) of the connection portion (30) is smaller than a width (WI) of the vibration plate (20). In this configuration, the relative positional relationship among the vibrators (11) is easily stabilized.