Shift control apparatus for vehicular continuously variable transmissions

A shift control apparatus for vehicular continuously variable transmissions, comprising:

• a continuously variable transmission provided in a driving force transmission path between a running power source and drive wheels to continuously change a change gear ratio;
• a manual shift control portion that changes the change gear ratio of the continuously variable transmission in accordance with an operation by a driver among a plurality of shift stages set stepwise in advance;
• an automatic shift control portion that changes the change gear ratio of the continuously variable transmission on a basis of a running state of a vehicle;
• a first changeover portion that makes, in accordance with an operation by the driver, a changeover from an automatic shift mode in which the automatic shift control portion performs shift control to a manual shift mode in which the manual shift control portion performs shift control;
• a second changeover portion that makes a changeover from the manual shift mode to the automatic shift mode;
• and
• a related value calculating portion that calculates a first driving force related value in association with the automatic shift mode and a second driving force related value in association with the manual shift mode, the first driving force related value and the second driving force related value being set larger as a driving force output from the running power source increases,
• wherein the second changeover portion makes a changeover from the manual shift mode to the automatic shift mode on a basis of a relationship between the first driving force related value and the second driving force related value.