SMALL-SIZED LOAD SENSOR UNIT

摘要

A small-sized load sensor unit including a pressure member, to which a pressing force is applied, a strain body which is fixed to the pressure member by a first fixing member, a strain measuring unit which is provided on the strain body and is configured to be deformed together with the strain body, a first restricting unit which restricts a pressing force applied to a substantially center portion of the pressure member such that the pressing force becomes a predetermined threshold value or less, and a second restricting unit which restricts the pressure member from moving by a predetermined amount or more when a pressing force of an excessive load is applied to an edge portion of the pressure member.

主权项

1. A small-sized load sensor unit comprising:
a pressure member, to which a pressing force is applied; a strain body which is fixed to the pressure member by a first fixing member; a strain measuring unit which is provided on the strain body and is configured to be deformed together with the strain body when the pressing force is applied, and which is configured to measure a magnitude of the pressing force based on a deformation amount of the strain measuring unit; an amplifying unit which is configured to amplify an output of the strain measuring unit; a first restricting unit which is configured to restrict a pressing force applied to a substantially center portion of the pressure member such that the pressing force becomes a predetermined threshold value or less; and a second restricting unit which is configured to restrict the pressure member from moving by a predetermined amount or more when a pressing force of an excessive load is applied to an edge portion of the pressure member.