Acceleration detector with radial arm diaphragm

Details Acceleration detector with radial arm diaphragm Acceleration detector with radial arm diaphragm

1991-04-26

1993-07-13

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

73 35, 310324, G01P 1509

Patent

active

052263258

ABSTRACT:
An acceleration detector comprising a housing adapted to be rigidly secured to an object of which acceleration is to be detected and a transducer assembly disposed within the housing for detecting the acceleration on the housing. The transducer assembly comprises a disc-shaped diaphragm having a circular central region flexible in response to the acceleration on the housing and a plurality of radial arms integrally extending at equal intervals from the central region and supported by the housing at outer ends. A disc-shaped piezoelectric element is attached to the central region of the diaphragm for sensing flexture of the central region and generating a signal representative of the acceleration on the housing. The central region has a diameter not smaller than that of the piezoelectric element. The radial arms may have a total circumferential width dimension effective to improve temperature vs. resonance frequency characteristics of the transducer assembly. The housing may comprise a base and a cover securely connected together, and a continuous ring-shaped member connected to outer ends of the radial arms is firmly clamped in an air-tight manner between the base and the cover.

REFERENCES:
patent: 4190782 (1980-02-01), Guess
patent: 4193647 (1980-03-01), Guess et al.
patent: 4337640 (1982-07-01), Muranaka et al.
patent: 4382377 (1983-05-01), Kleinschmidt et al.
patent: 4414840 (1983-11-01), Yamaguchi et al.
patent: 4630465 (1986-12-01), Hatton

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