Variable valve apparatus

A variable valve apparatus configured to change a valve operation in a cylinder head, the variable valve apparatus comprising:

• a rocker shaft configured to extend from one side to the other side inside the cylinder head;
• a plurality of rocker arms configured to swing around an axis of the rocker shaft;
• a coupling pin disposed in a housing hole of the rocker arm closer to one side in an axial direction;
• a release pin disposed in a housing hole of the rocker arm closer to the other side in the axial direction;
• a transmission member disposed on the other side of the rocker arm closer to the other side;
• and
• a push-back member disposed so as to push back the transmission member from the other side,
• wherein a hydraulic pressure cylinder configured to push the coupling pin in toward the other side is formed in the rocker arm closer to the one side,
• wherein the hydraulic pressure cylinder is configured to push the coupling pin into the housing hole of the rocker arm closer to the other side while pushing the release pin out toward the other side to couple the plurality of rocker arms, and
• wherein the transmission member is configured to be pushed back by the push-back member and to push back the coupling pin into the housing hole of the rocker arm closer to the one side via the release pin to release a coupling of the plurality of rocker arms.