LOAD CELL HAVING OVERLOAD PREVENTING MECHANISM

摘要

Provided is a load cell which includes a stopper member for preventing an excess load from being applied to the load cell to prevent damages to the load cell which would be caused by the excess load, and which makes it possible to carry out a work for mounting the stopper member accurately and easily. A load cell 1 of the present invention is a Roberval-type load cell, comprising: an upper beam 2 section extending horizontally; a lower beam section 3 extending below the upper beam section 2 in parallel with the upper beam section 2; a fastening section 4 which connects one end of the upper beam section 2 and one end of the lower beam section 3 to each other and is fastened to a stationary object; a movable section 5 which connects the other end of the upper beam section 2 and the other end of the lower beam section 3 to each other and is displaced vertically by a load applied vertically to the movable section 5; and a cylindrical stopper member 7 having a circular cross-section. The fastening section 4 has a first circular hole 9 having a circular cross-section. The movable section 5 has a second circular hole 10 having a circular cross-section and being concentric with the first circular hole 9. A base end portion of the stopper member 7 is fitted into and fastened to the first circular hole 9 and a tip end portion of the stopper member 7 is located at an inner side of the second circular hole 10 such that there is a space of a specified width between the tip end portion and an inner surface of the second circular hole 10.