Traversor guide apparatus

Abstract

A traversor guide apparatus is disclosed. The present invention makes it possible to accurately measure a moved distance of an object by keeping a wire tightly wound on a bobbin even when a bobbin has an instant rotation.

1 . A traversor guide apparatus, comprising:
 a cylindrical bobbin which includes a plurality of spiral grooves, on which a wire is wound, are formed in its outer surface at regular intervals in a longitudinal direction, and a rotation through hole formed at a central portion of the interior of the same for receiving a shaft;   a driving block which includes an insertion hole, through which the wire passes, and then is engaged to the spiral groove, and an engaging protrusion formed at its inner surface and engaged to the spiral groove; and   a cover which covers an outer portion of the bobbin and includes a guide slot for guiding the driving block so that the driving block can move in a right angle direction to the rotation direction of the bobbin during the rotation of the bobbin, wherein said guide slot includes an inwardly protruded escape prevention part contacting with an outer surface of the driving block for thereby preventing an escape of the driving block from happening.   
     
     
         2 . The apparatus of  claim 1 , wherein at least two engaging protrusions are provided and thread-engaged with the spiral grooves, respectively, at two or more portions.