Tubular sensor with an inner projection
First Claim
Patent Images
1. A weight sensor comprising:
- a deformable body includinga 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, anda 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 that moves along the center axis so as to apply and applies a load to the deformable body so as to apply a moment to the tubular portion of the deformable body, wherein;
the pressing member presses the deformable body to urge the projection and the tubular portion of the deformable body relatively in directions which are opposite to each other and which are parallel with the center axis, andthe moment displaces an upper end and a lower end of the tubular portion in directions relatively opposite to each other in a radial direction about the center axis.
0 Assignments
0 Petitions
Accused Products
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.
-
Citations
20 Claims
-
1. 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 that moves along the center axis so as to apply and applies a load to the deformable body so as to apply a moment to the tubular portion of the deformable body, wherein; the pressing member presses the deformable body to urge the projection and the tubular portion of the deformable body relatively in directions which are opposite to each other and which are parallel with the center axis, and the moment displaces an upper end and a lower end of the tubular portion in directions relatively opposite to each other in a radial direction about the center axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A sensor comprising:
-
a deformable body including; a tubular portion having a tubular shape and having an outer side surface and an inner surface; and a projection projecting from the inner side surface of the tubular portion; a pressing member configured to apply a force to the deformable body; a first strain resistor disposed on the deformable body and configured to detect an amount of the force; and a second strain resistor disposed on the deformable body, wherein the pressing member presses the deformable body to urge the projection and the tubular portion of the deformable body relatively in directions which are opposite to each other and which are parallel with a center axis of the tubular portion, and the first strain resistor is disposed on an upper portion of the deformable body with respect to the projection and the second strain resistor is disposed on a lower portion of the deformable body with respect to the projection. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification