Piezoelectric accelerometer transducer
First Claim
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1. A piezoelectric transducer comprising a hollow piezoelectric ceramic element having an axis, an internal conical surface and an external conical surface, the internal and external conical surfaces being inclined with respect to the axis in the same sense;
- the transducer further comprising a metal spigot;
a metal sleeve; and
a clamping arrangement for applying axial force to hold the element sandwiched between the spigot and the sleeve, the spigot and the sleeve having conical surfaces which make intimate surface contact with the internal and external conical surfaces of the element respectively.
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Abstract
A piezoelectric transducer for use as an accelerometer has a polarized piezoelectric element sandwiched between a spigot and a sleeve. The element is hollow and conical, or frusto-conical so that the sandwiching effect can be achieved by means of axial clamping, as by a screw. This avoids the use of solders or adhesives and thus allows high temperature operation.
27 Citations
6 Claims
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1. A piezoelectric transducer comprising a hollow piezoelectric ceramic element having an axis, an internal conical surface and an external conical surface, the internal and external conical surfaces being inclined with respect to the axis in the same sense;
- the transducer further comprising a metal spigot;
a metal sleeve; and
a clamping arrangement for applying axial force to hold the element sandwiched between the spigot and the sleeve, the spigot and the sleeve having conical surfaces which make intimate surface contact with the internal and external conical surfaces of the element respectively. - View Dependent Claims (2, 3, 4, 5, 6)
- the transducer further comprising a metal spigot;
Specification