Invention Grant
US09255832B2 Bending beam load cell with enclosure 有权
弯曲梁称重传感器与外壳

Bending beam load cell with enclosure
Abstract:
A load cell includes a longitudinal body including force input and output elements and a bending beam, strain gages, and a hermetically sealed enclosure. A force applied onto the input element perpendicularly to the longitudinal axis causes bending strain of the beam, which is measured by the strain gages. The enclosure includes a stiff pipe sleeve and two ring elements, which each include a membrane that is more flexible than the pipe sleeve, and which support the pipe sleeve relative to and spaced radially away from the longitudinal body. The membranes preferably decouple the pipe sleeve from the longitudinal body so that essentially none of the applied force is shunted into the pipe sleeve. Preferably a cylindrical outer surface of the pipe sleeve can avoid accumulation of contaminants.
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