Patent ID: 6865953

Claim:
A force sensor comprising: a housing; a first block provided within the housing, the first block having a first face and a second face, and a force to be measured by the force sensor being applied on the first face of the first block; a second block provided within the housing, the second block having a third face and a fourth face, and the third face of the second block making contact with the second face of the first block; at least one piezoresistive element formed on one of the second face of the first block and the third face of the second block, resistance value of the piezoresistive element changing as contacting pressure between the first block and the second block changes; a first electrode formed on a face of the first block or the second block other than the fourth face of the second block; and a second electrode formed on the fourth face of the second block; wherein electrical characteristics between the first electrode and the second electrode changes in accordance with changes in the contacting pressure between the first block and the second block.