Patent ID: 9546918
Date: 2017-01-17
CPC Classifications: B25J,G01L

Claim:
1. A sensor element comprising: when three axes orthogonal to one another are set to be an A-axis, a B-axis, and a C-axis, at least one first piezoelectric plate that is configured to have an X cut quartz crystal plate and outputs a charge in response to an external force along the A-axis direction; at least one second piezoelectric plate that is configured to have a Y cut quartz crystal plate, that is stacked in the A-axis direction with the first piezoelectric plate, and that outputs a charge in response to the external force in the B-axis direction; and at least one third piezoelectric plate that is configured to have a Y cut quartz crystal plate, that is stacked in the A-axis direction so as to interpose the second piezoelectric plate between the first piezoelectric plate and the third piezoelectric plate, and so as to be arranged to turn around the A-axis, and that outputs a charge in response to the external force in the C-axis direction.