US 12,078,565 B2
Piezoelectric sensor and robot hand
Takayuki Yonemura, Suwa (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jun. 29, 2022, as Appl. No. 17/852,451.
Claims priority of application No. 2021-108748 (JP), filed on Jun. 30, 2021.
Prior Publication US 2023/0003597 A1, Jan. 5, 2023
Int. Cl. G01L 5/167 (2020.01); B25J 13/08 (2006.01); B25J 19/02 (2006.01)
CPC G01L 5/167 (2013.01) [B25J 13/085 (2013.01); B25J 19/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A piezoelectric sensor comprising:
an elastic body having a first surface;
a regulatory section which is disposed at a position where the regulatory section faces the first surface of the elastic body, and which is configured to limit a deformation of the elastic body; and
a first piezoelectric element which is partially fixed to the regulatory section, and which deforms in accordance with the deformation of the elastic body, wherein
the first piezoelectric element outputs a voltage signal which increases and decreases from a reference voltage in accordance with a direction of the deformation.