Tubular weight sensor with an inner projection
AssigneePanasonic Corporation
InventorsOhbayashi Masahiko, Motoki Ogata, Hiroaki Ishida, Takaaki Ogawa, Kazuhiro Nomura
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Abstract
A weight sensor includes a deformable body, a first strain resistor provided on an outer side surface of the deformable body, and a pressing member applying a load to the deformable body. The deformable body includes a tubular portion having a tubular shape extending along a center axis and surrounding the center axis, and a projection projecting from an inner surface of the tubular portion. The pressing member moves along the center axis so as to apply a moment to the tubular portion. The resistances of the strain resistors change greatly, allowing the weight sensor to measure a load with high sensitivity.
Claims11
A weight sensor comprising:
- a deformable body including
- a tubular portion having a tubular shape extending along a center axis and surrounding the center axis, the tubular portion having an outer side surface and an inner surface, the outer side surface facing in a direction away from the center axis, the inner surface facing the center axis, and
- a projection projecting from the inner surface of the tubular portion;
- a first strain resistor provided on the outer side surface of the deformable body;
- and
- a pressing member moving along the center axis so as to apply a load to the deformable body so as to apply a moment to the tubular portion of the deformable body.
Dependencies are inferred from the claim text.