| 摘要 |
<p>A high precision stretching force sensor has a column body (C). The middle part of the column body (C) is provided with two symmetrical blind holes (11, 12). At the length direction, the column body (C) is provided with symmetrical neck parts (21, 22) relative to the blind holes (11, 12). At the out side of the neck parts (21, 22), the column body (C) is provided with symmetrical or asymmetrical connecting parts (41-1, 41-2) relative to the blind holes (11, 12). The size of the neck parts (21, 22) is lesser than the diameter of the blind holes (11, 12) along the width direction of the column body (C). With the combination of the blind holes (11, 12) and the neck parts (21, 22), a stretching force can be transferred to the outside of the blind holes (11, 12) through the neck parts (21, 22) when the sensor is stretched. The bottom of the middle blind holes (11, 12) is stretched longitudinally and compressed transversely under the deformation of the outside thereof, thus providing an ideal stretching and compression stress distribution for a strain gauge. The above sensor has the advantages of higher sensitivity than a conventional stretching plate force sensor, which is 3mV/V or above, a low total height, a light weight, and an overload coefficient above 400%. The above sensor also accords with the C3 authentication of the OIML.</p> |
