Patent ID: 8267631

Claim:
A fitting member positioning device comprising: (a) a first element including an insert portion formed in a predetermined location to be received in an insertion hole, the insert portion having a first thread portion formed therein; (b) a second element disposed rotatably relative to the first element and movably in the axial direction, having a second thread portion formed thereon to be threaded in the first thread portion; and (c) a base having an insertion hole formed therein; wherein, (d) the first element is disposed rotatably relative to the base and integrally with the insert portion, the first element including an eccentric cam which is brought into abutment against a guide member on a reference face, defined on the base externally to the insertion hole, by rotation of the first element; and (e) the insert portion includes at its end a dilating portion formed integrally around the circumference of the insert portion, the dilating portion has an annular shape defining a continuous perimeter having a ring shape, and (f) the second element includes an advancing portion adapted to be advanced into and integrally dilate the dilating portion in the circumferential direction when the second element is axially moved along with its rotation by the first and second thread portions being threaded together to press the first element against an inner circumferential surface of the insertion hole to prevent rotation of the first element.