Piezoelectric type acceleration sensor with metallic case and re

Details Piezoelectric type acceleration sensor with metallic case and re Piezoelectric type acceleration sensor with metallic case and re

1995-12-07

1997-10-21

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

310324, G01P 1509, H01L 4108

Patent

active

056798970

ABSTRACT:
A disc-shaped diaphragm 16 is fixed on a protruding portion 15a formed on the bottom of case 15. Piezoelectric elements 17 and 18 are bonded on upper and lower surfaces of the diaphragm 16. A printed circuit board 24 closes the opening of case 15. Outer surfaces of case 15 and printed circuit board 24 are covered by a resin package 28. Lead terminals 22 and 23 are held by a lead holding member 21. Lend terminals 22 and 23 connect the piezoelectric elements 17 and 18 with a circuit on printed circuit board 24. With this arrangement, it becomes possible to provide an acceleration sensor used in an air bag system which is capable of reducing the number of parts and simplifying the structure.

REFERENCES:
patent: 4354134 (1982-10-01), Micheron
patent: 5003824 (1991-04-01), Fukada et al.

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