Piezoelectric acceleration sensor
First Claim
Patent Images
1. A piezoelectric acceleration sensor comprising:
- a piezoelectric element;
a metallic sheet; and
a circuit board, wherein;
the piezoelectric element is polarized in an upper-to-lower direction;
the circuit board includes a circuit portion and a roughly flat shaped base portion, the base portion protruding from an end portion of the circuit portion; and
one of surfaces of the metallic sheet is fixed to and supported by a surface of the base portion, the piezoelectric element being fixed to and supported by a remaining one of the surfaces of the metallic sheet such that the piezoelectric element and the base portion do not overlap each other in the upper-to-lower direction;
the metallic sheet is partially located on the base portion in the upper-to-lower direction;
the piezoelectric element is located on the metallic sheet in the upper-to-lower direction; and
the piezoelectric element is apart from the base portion in a left-to-right direction perpendicular to the upper-to-lower direction.
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Accused Products
Abstract
A piezoelectric acceleration sensor comprises a piezoelectric element, a metallic sheet and a circuit board. The piezoelectric element is polarized in a predetermined direction. The circuit board includes a circuit portion and a roughly flat shaped base portion. The base portion protrudes from an end portion of the circuit portion. One of surfaces of the metallic sheet is fixed to and supported by a surface of the base portion. The piezoelectric element is fixed to and supported by a remaining one of the surfaces of the metallic sheet in a manner that the piezoelectric element and the base portion do not overlap each other in the predetermined direction.
8 Citations
10 Claims
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1. A piezoelectric acceleration sensor comprising:
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a piezoelectric element; a metallic sheet; and a circuit board, wherein; the piezoelectric element is polarized in an upper-to-lower direction; the circuit board includes a circuit portion and a roughly flat shaped base portion, the base portion protruding from an end portion of the circuit portion; and one of surfaces of the metallic sheet is fixed to and supported by a surface of the base portion, the piezoelectric element being fixed to and supported by a remaining one of the surfaces of the metallic sheet such that the piezoelectric element and the base portion do not overlap each other in the upper-to-lower direction; the metallic sheet is partially located on the base portion in the upper-to-lower direction; the piezoelectric element is located on the metallic sheet in the upper-to-lower direction; and the piezoelectric element is apart from the base portion in a left-to-right direction perpendicular to the upper-to-lower direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification