| 摘要 |
[Object] To provide a low-cost, compact, high-precision axial force sensor. [Solution] The axial force sensor is configured including a pair of pressing plates (12) and a strain gauge (14) arranged in parallel, and sandwiching the strain gauge (14) with the pair of pressing plates (14). The strain gauge (14) includes a plurality of sensitive elements consisting of resistors, and is provided with a spacer (16) that transmits a pressing force from the pair of pressing plates (12) to at least one of the plurality of sensitive elements and blocks the pressing force with respect to the rest of the sensitive elements. The spacer (16) is formed in a ring shape, and has a plurality of opening portions formed at constant angular intervals. On the strain gauge, the sensitive elements are provided at the positions of the opening portions and positions therebetween. |
