Sealed incremental measuring device having an articulated fastening means for mounting the housing

摘要

A photoelectric incremental longitudinal measuring instrument is disclosed in which a measuring graduation and a displaceable photoelectric sensor housing unit are enclosed in an elongated hollow body resistant to bending to screen the measuring graduation and the sensor unit from environmental influences. The hollow body is fastened to one of the two objects to be measured with the instrument by fastening means having an articulated design, preferably, a pair of legs formed at an angle to one another having a weak place in the form of a groove in the apex area of the legs. Such an articulated design virtually eliminates the presence of compulsive forces between the hollow body and the object to which it is attached via the fastening means.