Valve timing controller

A valve timing controller disposed in a passage where a driving force is transmitted from a driving shaft to a driven shaft of an internal combustion engine to control a valve timing of a valve driven to open and close by the driven shaft, the valve timing controller comprising:

• a housing rotatable with one of the driving shaft and the driven shaft;
• a vane rotor rotatable with the other of the driving shaft and the driven shaft, the vane rotor having a vane part that divides an interior space of the housing into a first oil pressure chamber on one side in a circumferential direction and a second oil pressure chamber on the other side in the circumferential direction;
• a valve body having a based cylindrical shape including a pipe part and a bottom arranged coaxially with the vane rotor at a central part of the vane rotor, the valve body having a supply port to communicate with an external oil feed section, a first drain port to communicate with the first oil pressure chamber, and a second drain port to communicate with the second oil pressure chamber;
• and
• a spool movable in an axial direction inside of the pipe part of the valve body, the spool and the bottom of the valve body defining a drain space, the spool opening the second drain port that is located closer to the bottom of the valve body than the first drain port is when discharging operation oil of the second oil pressure chamber to a drain oil passage which includes the drain space, wherein
• the supply port includes a supply recess recessed outward in a radial direction from an inner wall surface of the pipe part of the valve body,
• the second drain port includes a first drain recess recessed outward in the radial direction from the inner wall surface of the pipe part, and
• a depth of the first drain recess in the radial direction is smaller than a depth of the supply recess in the radial direction.