Snap tap mounting jig

A snap tap mounting jig, comprising:

• a main shaft including a distal end, the main shaft being insertable into a metal sleeve;
• a rubber packing that is disposed in a water diverting port formed in a water pipe on the distal end of the main shaft;
• an opening distal end portion of a metal sleeve loosely fitted on an inner peripheral surface of the rubber packing, the opening distal end portion of the metal sleeve being configured to be insertable and projectable into the inside of the water pipe;
• an eccentrically movable shaft that is insertable into the main shaft in a longitudinal direction;
• a diameter enlarging roller coupled to on a lower end of the eccentrically movable shaft obliquely by way of a diameter enlarging head, the diameter enlarging roller being configured to advance or retract toward an inside or an outside of an outer diameter of the main shaft due to an eccentric rotation of the eccentrically movable shaft;
• and
• a snap tap that is configured to be caulked to the water diverting port of the water pipe;
• wherein the opening distal end portion of the metal sleeve is bendable toward the outside of the outer diameter of the main shaft in a folded-back state together with the rubber packing due to a rotation of the main shaft while bringing the diameter enlarging roller is in contact with the opening distal end portion of the metal sleeve projecting into the inside of the water pipe in a state where the diameter enlarging roller is advanced to the outside of the outer diameter of the main shaft;
• wherein the diameter enlarging roller has a hyperboloid shape having a recessed portion and a substantially upper half portion of the diameter enlarging roller mounted obliquely has a substantially tapered shape, and a substantially lower half portion of the diameter enlarging roller mounted obliquely has a rounded shape;
• and
• wherein a recessed groove portion is disposed on an upper end surface and a lower end surface of the diameter enlarging roller and a shim is disposed in the recessed groove portion.

A snap tap mounting jig, comprising:

• a main shaft including a distal end, the main shaft being insertable into a metal sleeve;
• a rubber packing that is disposed in a water diverting port formed in a water pipe on the distal end of the main shaft;
• an opening distal end portion of the metal sleeve loosely fitted on an inner peripheral surface of the rubber packing is configured to be insertable and projectable into an inside of the water pipe;
• an eccentrically movable shaft that is insertable into the main shaft in a longitudinal direction
• a diameter enlarging roller coupled to a lower end of the eccentrically movable shaft obliquely by way of a diameter enlarging head, the diameter enlarging roller being configured to advance or retract toward an inside or an outside of an outer diameter of the main shaft due to an eccentric rotation of the eccentrically movable shaft;
• and
• a snap tap that is configured to be caulked to the water diverting port of the water pipe;
• wherein the opening distal end portion of the metal sleeve is bendable toward the outside of the outer diameter of the main shaft in a folded-back state together with the rubber packing due to a rotation of the main shaft while bringing the diameter enlarging roller is in contact with the opening distal end portion of the metal sleeve projecting into the inside of the water pipe in a state where the diameter enlarging roller is advanced to the outside of the outer diameter of the main shaft;
• wherein the diameter enlarging roller has a hyperboloid shape having a recessed portion and a substantially upper half portion of the diameter enlarging roller mounted obliquely has a substantially tapered shape, and a substantially lower half portion of the diameter enlarging roller mounted obliquely is has a rounded shape;
• and
• wherein the snap tap mounting jig is configured to detect an enlarged diameter amount of a distal end of the metal sleeve by the diameter enlarging roller, and further comprises:
• an enlarged diameter amount detection mechanism on a proximal end operating portion of a roller shaft having a distal end on which the diameter enlarging roller is configured to be continuously formed and the enlarged diameter amount detection mechanism is configured to indicate an elevation and a rotational amount of the roller shaft as the enlarged diameter amount by means of a scale marked on an enlarged diameter amount detection nut that is integrally formed with the roller shaft.