Load measuring apparatus

A load measuring apparatus, comprising:

• a long and narrow beam member having a loading section provided at one end;
• a supporting member for supporting the beam member at a side closer to the other end of the beam member than the loading section;
• and
• a displacement sensor provided in such a manner as to be able to measure a displacement of the loading section,
• wherein:
• the beam member includes a pair of long and narrow plate-like leg portions arranged in parallel to each other while being spaced apart in a thickness direction and a connecting portion which connects ends of the respective plate-like leg portions at a side of the loading section, is formed by bending opposite end parts of a long and narrow plate-like member in the same direction at right angles to a central part so that the central part forms the connecting portion and the bent opposite end parts form the respective plate-like leg portions and is supported on the supporting member slidably along a length direction of the respective plate-like leg portions so as to be able to change a length between a supported position by the supporting member and the loading section;
• the loading section includes a needle-like tip and is fixed to the one end of the beam member so as to perpendicularly project from a surface of one plate-like leg portion;
• and
• the displacement sensor is capable of measuring a displacement in a projecting direction of the loading section.