Patent ID: 7134327

Claim:
A force-on-pedal sensor comprising: a cylindrical substrate whose one end is closed having: a hole at a center of a side section of the cylindrical substrate; and a strain resistance element via an insulating layer at the side section of the cylindrical substrate; a coil spring coaxially inserted from an open end of the substrate; an inputting shaft having a stepped part contacted with one end of the coil spring and inserted in the hole in such a manner that a part of the inputting shaft is protruded from the hole; and a stopper at a position where the inputting shaft is protruded, wherein a first stopper having an outer diameter larger than an inner diameter of a cylindrical section of the substrate is inserted into the stepped part of the inputting shaft, and contacts the coil spring, wherein when the coil spring is contracted to a certain load, the first stopper contacts the substrate, so that no more load is applied.